{"id":2426,"date":"2020-11-30T05:03:21","date_gmt":"2020-11-29T23:33:21","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=2426"},"modified":"2020-11-30T10:50:56","modified_gmt":"2020-11-30T05:20:56","slug":"order-elements-chemical-formula","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/","title":{"rendered":"How do you know the Order of Elements in a Chemical Formula"},"content":{"rendered":"<h2><strong>How do you know the Order of Elements in a Chemical Formula<\/strong><\/h2>\n<h2>What is Chemical Formula?<\/h2>\n<p>A <strong>chemical formula<\/strong> is a representation of a chemical substance using letters for atoms and subscript numbers to show the numbers of each type of atoms that are present in the substance.<br \/>\nBased on the chemical formula of a substance, we know the composition of the substance.<br \/>\n(a) The elements that make up the substance.<br \/>\n(b) The ratio or number of atoms of each element in the substance.<\/p>\n<h2>Chemical formulae of elements<\/h2>\n<p>The chemical formula of an element is a statement of the composition of its molecule in which symbol tells us the element and the subscript tells us how many atoms are present in one molecule. One molecule of hydrogen element contains two atoms of hydrogen, therefore, the formula of hydrogen is H<sub>2<\/sub>.<\/p>\n<ol>\n<li>For elements that exist as atoms, their chemical formulae represent their atoms.<\/li>\n<li>For elements that exist as molecules, their chemical formulae represent their molecules. Subscript number at the right bottom shows the number of atoms in each molecule.<\/li>\n<\/ol>\n<p><strong><b>Example:\u00a0<\/b><\/strong>The formula H<sub>2<\/sub> indicates that one molecule of hydrogen element contains 2 atoms of hydrogen. 2 H represents 2 separate atoms of hydrogen; H<sub>2<\/sub> represents 1 molecule of hydrogen and 2H<sub>2<\/sub> represents 2 molecules of hydrogen.<\/p>\n<p><strong>Table: Chemical formulae of some elements<\/strong><\/p>\n<table style=\"height: 77px;\" border=\"2\" width=\"692\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"71\"><strong>Element<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"65\"><strong>Chemical Formula<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"198\"><strong>Meaning of chemical formula<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"71\">Carbon<\/td>\n<td style=\"text-align: center;\" width=\"65\">C<\/td>\n<td style=\"text-align: center;\" width=\"198\">Carbon is made up of carbon atoms.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"71\">Argon<\/td>\n<td style=\"text-align: center;\" width=\"65\">Ar<\/td>\n<td style=\"text-align: center;\" width=\"198\">Argon is made up of. argon atoms.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"71\">Copper<\/td>\n<td style=\"text-align: center;\" width=\"65\">Cu<\/td>\n<td style=\"text-align: center;\" width=\"198\">Copper is made up of copper atoms.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"71\">Oxygen gas<\/td>\n<td style=\"text-align: center;\" width=\"65\">O<sub>2<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"198\">Each oxygen molecule consists of two oxygen atoms.<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"71\">Chlorine gas<\/td>\n<td style=\"text-align: center;\" width=\"65\">Cl<sub>2<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"198\">Each chlorine molecule consists of two chlorine atoms.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><strong>People also ask<\/strong><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\"><a href=\"https:\/\/cbselibrary.com\/relative-atomic-mass-relative-molecular-mass-element\/\">What is the Relative Atomic Mass and Relative Molecular Mass of an Element?<\/a><\/span><\/li>\n<li><a href=\"https:\/\/cbselibrary.com\/one-mole-particles-in-mole\/\"><span style=\"font-weight: 400;\">What is One Mole and How many Particles are in a Mole?<\/span><\/a><\/li>\n<li><a href=\"https:\/\/cbselibrary.com\/calculate-molar-mass-substance\/\">How do you Calculate the Molar Mass of a Substance?<\/a><\/li>\n<li><a href=\"https:\/\/cbselibrary.com\/molar-volume-gas-stp\/\">What is the Molar Volume of a Gas at STP?<\/a><\/li>\n<li><a href=\"https:\/\/cbselibrary.com\/empirical-and-molecular-formula\/\">What is Empirical and Molecular Formula?<\/a><\/li>\n<li><a href=\"https:\/\/cbselibrary.com\/chemical-equations\/\">How do you Write a Chemical Equation?<\/a><\/li>\n<\/ul>\n<h2>Chemical formulae of compounds<\/h2>\n<ol>\n<li>Chemical formula of a compound tells us the composition of the compound.<\/li>\n<li>However, the chemical formula does not show the type of particles in the compound.<\/li>\n<li><strong><b>Example:\u00a0<\/b><\/strong>Water is a compound made up of 2 atoms of hydrogen element and 1 atom of oxygen element, so the formula of water is written as H<sub>2<\/sub>O. In the formula H<sub>2<\/sub>O, the subscript 2 indicates 2 atoms of hydrogen. In the formula of water, oxygen O is written without a subscript and it indicates 1 atoms of oxygen.<\/li>\n<\/ol>\n<p><strong>Table: Chemical formulae of some compounds<\/strong><\/p>\n<table border=\"2\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\" rowspan=\"2\" width=\"116\"><strong>Compound<\/strong><\/td>\n<td style=\"text-align: center;\" rowspan=\"2\" width=\"138\"><strong>Chemical formula<\/strong><\/td>\n<td style=\"text-align: center;\" colspan=\"3\" width=\"353\"><strong>Meaning of chemical formula<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" colspan=\"2\" width=\"176\"><strong>Elements present<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"175\"><strong>Ratio of the number of atoms of elements<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"116\">Water<\/td>\n<td style=\"text-align: center;\" width=\"138\">H<sub>2<\/sub>O<\/td>\n<td style=\"text-align: center;\" width=\"175\">Hydrogen, oxygen<\/td>\n<td style=\"text-align: center;\" colspan=\"2\" width=\"176\">H:O = 2:1<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"116\">Ammonia<\/td>\n<td style=\"text-align: center;\" width=\"138\">NH<sub>3<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"175\">Nitrogen, hydrogen<\/td>\n<td style=\"text-align: center;\" colspan=\"2\" width=\"176\">N:H = 1:3<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"116\">Sulphuric acid<\/td>\n<td style=\"text-align: center;\" width=\"138\">H<sub>2<\/sub>SO<sub>4<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"175\">Hydrogen, sulphur, oxygen<\/td>\n<td style=\"text-align: center;\" colspan=\"2\" width=\"176\">H:S:O = 2:1:4<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"116\">Zinc hydroxide<\/td>\n<td style=\"text-align: center;\" width=\"138\">Zn(OH)<sub>2<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"175\">Zinc, oxygen, hydrogen<\/td>\n<td style=\"text-align: center;\" colspan=\"2\" width=\"176\">Zn:O:H = 1:2:2<\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"116\">Magnesium nitrate<\/td>\n<td style=\"text-align: center;\" width=\"138\">Mg(NO<sub>3<\/sub>)<sub>2<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"175\">Magnesium, nitrogen, oxygen<\/td>\n<td style=\"text-align: center;\" colspan=\"2\" width=\"176\">Mg;N;O = 1:2:6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><strong><b>Rules for writing a chemical formula<\/b><\/strong><\/h2>\n<ol>\n<li>We first write the symbols of the elements which form the compound<\/li>\n<li>Below the symbol of each element, we write down its valency.<\/li>\n<li>Finally, we cross-over the valencies of the combining atoms. That is, with first atom we write the valency of second atom (as a subscript); and with the second atom we write the valency of first atom (as subscript).<\/li>\n<\/ol>\n<p><strong><b>Example 1:<\/b><\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108898\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 1\" width=\"335\" height=\"96\" srcset=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png 335w, https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1-300x86.png 300w\" sizes=\"(max-width: 335px) 100vw, 335px\" \/><br \/>\n<strong><b>Example 2:<\/b><\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108900\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-2.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 2\" width=\"141\" height=\"100\" \/><br \/>\n<strong><b>Example 3:<\/b><\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108901\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-3.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 3\" width=\"142\" height=\"101\" \/><br \/>\n<strong><b>Example 4:<\/b><\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108902\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-4.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 4\" width=\"139\" height=\"101\" \/><br \/>\n<strong><b>Example 5:<\/b><\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108903\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-5.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 5\" width=\"141\" height=\"99\" \/><\/p>\n<h2><strong><b>Writing the formula of a compound<\/b><\/strong><\/h2>\n<p><strong><b>Step-1 : <\/b><\/strong><br \/>\nWrite the symbols of formulae of the ions of the compound side by side with positive ion on the left hand side and negative ion on right hand side.<br \/>\n<strong><b>Step-2 : <\/b><\/strong><br \/>\nEnclose the polyatomic ion in a bracket.<br \/>\n<strong><b>Step-3 : <\/b><\/strong><br \/>\nWrite the valency of each ion below its symbol<br \/>\n<strong><b>Step-4 : <\/b><\/strong><br \/>\nReduce the valency numerals to a simple ratio by dividing with a common factor, if any.<br \/>\n<strong><b>Step-5 : <\/b><\/strong><br \/>\nCross the valencies. Do not write the charges positive or negative of the ions.<br \/>\n<strong><b>Example:\u00a0<\/b><\/strong>Formula of barium nitrate.<br \/>\n<strong><b>Step-1<\/b><\/strong><strong><b> :<\/b><\/strong> Writing the formula of the ions :<br \/>\nBa<sup>2+<\/sup>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 NO<sub>3<\/sub><sup>\u2013<\/sup><br \/>\n<strong><b>Step-2 :<\/b><\/strong>\u00a0 \u00a0Ba<sup>2+<\/sup>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (NO<sub>3<\/sub>)<sup>\u2013<\/sup><br \/>\n<strong><b>Step-3 :<\/b><\/strong>\u00a0 \u00a0Ba<sup>2+<\/sup>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 (NO<sub>3<\/sub>)<sup>\u2013<\/sup><br \/>\n2 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a01<br \/>\n<strong><b>Step-4 : <\/b><\/strong>Not applicable, because ratio is already simple<br \/>\n<strong><b>Step-5 : <\/b><\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108904\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-6.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 6\" width=\"157\" height=\"84\" \/><br \/>\nThus, the formula of barium nitrate is Ba(NO<sub>3<\/sub>)<sub>2<\/sub><\/p>\n<h2><strong><b>Significance of the formula of a substance <\/b><\/strong><\/h2>\n<ol>\n<li>Formula represents the name of the substance.<\/li>\n<li>Formula represents one molecule of the substance.<\/li>\n<li>Formula also represents one mole of molecules of the substance. That is, formula also represents 6.022 \u00d7 10<sup>23<\/sup> molecules of the substance.<\/li>\n<li>Formula gives the name of all the elements present in the molecule.<\/li>\n<li>Formula gives the number of atoms of each element present in one molecule.<\/li>\n<li>Formula represents a definite mass of the substance.<\/li>\n<\/ol>\n<h2>Chemical formulae of ionic compounds<\/h2>\n<ol>\n<li>Ionic compounds consist of cations and anions.<br \/>\n(a) Cations are positively-charged ions.<br \/>\n(b) Anions are negatively-charged ions.<\/li>\n<li>To construct chemical formulae of ionic compounds, we need to know the formulae of cations and anions.<\/li>\n<li>Below tables \u00a0show the formulae of some common cations and anions.<br \/>\nTable: Formulae of some common cations.<\/p>\n<table border=\"2\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"84\"><strong>Charge of cation<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"109\"><strong>Cation (positive ion)<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"96\"><strong>Formula of cation<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" rowspan=\"6\" width=\"84\">+ 1<\/td>\n<td style=\"text-align: center;\" width=\"109\">Sodium ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Na<sup>+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Potassium ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">K<sup>+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Silver ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Ag<sup>+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Hydrogen ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">H<sup>+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Ammonium ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">NH<sub>4<\/sub><sup>+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Copper(I) ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Cu<sup>2+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" rowspan=\"8\" width=\"84\">+2<\/td>\n<td style=\"text-align: center;\" width=\"109\">Calcium ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Ca<sup>2+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Magnesium ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Mg<sup>2+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Zinc ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Zn<sup>2+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Barium ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Ba<sup>2+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Iron(II) ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Fe<sup>2+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Copper(II) ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Cu<sup>2+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Tin(II) ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Sn<sup>2+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Lead(II) ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Pb<sup>2+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" rowspan=\"3\" width=\"84\">+3<\/td>\n<td style=\"text-align: center;\" width=\"109\">Iron(III) ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Fe<sup>3+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Aluminium ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Al<sup>3+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Chromium(III) ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Cr<sup>3+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" rowspan=\"2\" width=\"84\">+4<\/td>\n<td style=\"text-align: center;\" width=\"109\">Tin(IV) ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Sn<sup>4+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"109\">Lead(IV) ion<\/td>\n<td style=\"text-align: center;\" width=\"96\">Pb<sup>4+<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table border=\"2\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"90\"><strong>Charge of anion<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"108\"><strong>Anion<\/strong><br \/>\n<strong> (negative ion)<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"91\"><strong>Formula of anion<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" rowspan=\"16\" width=\"90\">-1<\/td>\n<td style=\"text-align: center;\" width=\"108\">Fluoride ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">F<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Chloride ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">cl<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Bromide ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">Br<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Iodide ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">I<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Hydroxide ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">OH<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Nitrate ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">NO<sub>3<\/sub><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Nitrite ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">NO<sub>2<\/sub><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Hydride ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">H<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Ethanoate ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">CH<sub>3<\/sub>COO<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Manganate(VII) ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">MnO<sub>4<\/sub><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Chlorate(I) ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">ClO<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Bromate(I) ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">BrO<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Iodate(I) ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">IO<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Chlorate(V) ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">ClO<sub>3<\/sub><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Bromate(V) ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">BrO<sub>3<\/sub><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Iodate(V) ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">IO<sub>3<\/sub><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" rowspan=\"8\" width=\"90\">-2<\/td>\n<td style=\"text-align: center;\" width=\"108\">Oxide ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">O<sup>2<\/sup><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Carbonate ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">CO<sub>3<\/sub><sup>2-<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Sulphide ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">S<sup>2-<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Sulphate ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">SO<sub>4<\/sub><sup>2<\/sup><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Sulphite ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">S<sub>2<\/sub>O<sub>3<\/sub><sup>2-<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Thiosulphate ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">O<sub>3<\/sub><sup>2<\/sup><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Chromate(VI) ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">CrO<sub>4<\/sub><sup>2-<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"108\">Dichromate(VI) ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">Cr<sub>2<\/sub>O<sub>7<\/sub><sup>2-<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"90\">-3<\/td>\n<td style=\"text-align: center;\" width=\"108\">Phosphate ion<\/td>\n<td style=\"text-align: center;\" width=\"91\">PO<sub>4<\/sub><sup>3-<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n<li>Even though ionic compounds contain charged particles, their chemical formulae are electrically\u00a0neutral. This is because the total positive charges are equal to the total negative charges.<\/li>\n<li>Steps in constructing the chemical formula of an ionic compound:\n<ol>\n<li>From its name, write the formulae of its cation and anion.<\/li>\n<li>Determine the number of cations and anions by balancing the positive and negative charges.<\/li>\n<li>Write the number of cations and anions as subscript numbers.<br \/>\nEx: Construct the chemical formula of iron(II) chloride.<br \/>\nSolution:<br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108905\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-7.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 7\" width=\"434\" height=\"313\" srcset=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-7.png 434w, https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-7-300x216.png 300w\" sizes=\"(max-width: 434px) 100vw, 434px\" \/><\/li>\n<\/ol>\n<\/li>\n<li>There is an easier way to determine the number of cations and anions. You only need to interchange the value of the charges of the ions as shown in the following examples.<\/li>\n<li>However, when the cation and anion have the same value of charges, you need to determine the simplest ratio of the ions.<\/li>\n<li>Some ions such as OH<sup>&#8211;<\/sup>, CO<sub>3<\/sub><sup>2-<\/sup>, SO<sub>4<\/sub><sup>2<\/sup><sup>&#8211;<\/sup> and NO<sub>3<\/sub><sup>&#8211;<\/sup> are made up of more than one element. Brackets are used to show the number of these ions in formulae.<br \/>\nTable: Usage of brackets in formulae<\/p>\n<table border=\"2\">\n<tbody>\n<tr>\n<td style=\"text-align: center;\" width=\"97\"><strong>Formula of ionic compound<\/strong><\/td>\n<td style=\"text-align: center;\" width=\"192\"><strong>Usage of brackets in the formula<\/strong><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"97\">Mg(OH)<sub>2<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"192\">To show that there are 2 groups of OH<sup>&#8211;<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"97\">AI<sub>2<\/sub>(CO<sub>3<\/sub>)<sub>3<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"192\">To show that there are 3 groups of CO<sub>3<\/sub><sup>2-<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"97\">(NH<sub>4<\/sub>)<sub>2<\/sub>SO<sub>4<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"192\">To show that there are 2 groups of NH<sub>4<\/sub><sup>+<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"text-align: center;\" width=\"97\">Cu(NO<sub>3<\/sub>)<sub>2<\/sub><\/td>\n<td style=\"text-align: center;\" width=\"192\">To show that there are 2 groups of NO<sub>3<\/sub><sup>&#8211;<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/li>\n<\/ol>\n<h2>Chemical formulae of ionic compounds Problems with Solutions<\/h2>\n<p><strong>1. Construct the chemical formula of iron(II) chloride.<\/strong><br \/>\n<strong>Solution:<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108908\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-8.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 8\" width=\"454\" height=\"220\" srcset=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-8.png 454w, https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-8-300x145.png 300w\" sizes=\"(max-width: 454px) 100vw, 454px\" \/><\/p>\n<p><strong>2. Construct the chemical formula of aluminium oxide.<\/strong><br \/>\n<strong>Solution:<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108909\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-9.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 9\" width=\"453\" height=\"219\" srcset=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-9.png 453w, https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-9-300x145.png 300w\" sizes=\"(max-width: 453px) 100vw, 453px\" \/><\/p>\n<p><strong>3. Construct the chemical formula of zinc sulphate.<\/strong><br \/>\n<strong>Solution:<\/strong><br \/>\n<img loading=\"lazy\" class=\"alignnone size-full wp-image-108910\" src=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-10.png\" alt=\"How do you know the Order of Elements in a Chemical Formula 10\" width=\"451\" height=\"271\" srcset=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-10.png 451w, https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-10-300x180.png 300w\" sizes=\"(max-width: 451px) 100vw, 451px\" \/><\/p>\n","protected":false},"excerpt":{"rendered":"<p>How do you know the Order of Elements in a Chemical Formula What is Chemical Formula? A chemical formula is a representation of a chemical substance using letters for atoms and subscript numbers to show the numbers of each type of atoms that are present in the substance. Based on the chemical formula of a &#8230; <a title=\"How do you know the Order of Elements in a Chemical Formula\" class=\"read-more\" href=\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/\" aria-label=\"More on How do you know the Order of Elements in a Chemical Formula\">Read more<\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[84],"tags":[4307,4306,4305,4308,4310,4304,4309],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.8 (Yoast SEO v18.4.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How do you know the Order of Elements in a Chemical Formula - CBSE Library<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How do you know the Order of Elements in a Chemical Formula\" \/>\n<meta property=\"og:description\" content=\"How do you know the Order of Elements in a Chemical Formula What is Chemical Formula? A chemical formula is a representation of a chemical substance using letters for atoms and subscript numbers to show the numbers of each type of atoms that are present in the substance. Based on the chemical formula of a ... Read more\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/\" \/>\n<meta property=\"og:site_name\" content=\"CBSE Library\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/aplustopper\/\" \/>\n<meta property=\"article:published_time\" content=\"2020-11-29T23:33:21+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-11-30T05:20:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png\" \/>\n<meta name=\"twitter:card\" content=\"summary\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Raju\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Organization\",\"@id\":\"https:\/\/cbselibrary.com\/#organization\",\"name\":\"Aplus Topper\",\"url\":\"https:\/\/cbselibrary.com\/\",\"sameAs\":[\"https:\/\/www.facebook.com\/aplustopper\/\"],\"logo\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/cbselibrary.com\/#logo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2018\/12\/Aplus_380x90-logo.jpg\",\"contentUrl\":\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2018\/12\/Aplus_380x90-logo.jpg\",\"width\":1585,\"height\":375,\"caption\":\"Aplus Topper\"},\"image\":{\"@id\":\"https:\/\/cbselibrary.com\/#logo\"}},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/cbselibrary.com\/#website\",\"url\":\"https:\/\/cbselibrary.com\/\",\"name\":\"CBSE Library\",\"description\":\"Improve your Grades\",\"publisher\":{\"@id\":\"https:\/\/cbselibrary.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/cbselibrary.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#primaryimage\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png\",\"contentUrl\":\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png\",\"width\":335,\"height\":96,\"caption\":\"How do you know the Order of Elements in a Chemical Formula 1\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#webpage\",\"url\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/\",\"name\":\"How do you know the Order of Elements in a Chemical Formula - CBSE Library\",\"isPartOf\":{\"@id\":\"https:\/\/cbselibrary.com\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#primaryimage\"},\"datePublished\":\"2020-11-29T23:33:21+00:00\",\"dateModified\":\"2020-11-30T05:20:56+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/cbselibrary.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"How do you know the Order of Elements in a Chemical Formula\"}]},{\"@type\":\"Article\",\"@id\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#webpage\"},\"author\":{\"@id\":\"https:\/\/cbselibrary.com\/#\/schema\/person\/bd70dda77c8f886a86b7f2142f75d9c2\"},\"headline\":\"How do you know the Order of Elements in a Chemical Formula\",\"datePublished\":\"2020-11-29T23:33:21+00:00\",\"dateModified\":\"2020-11-30T05:20:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#webpage\"},\"wordCount\":1270,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/cbselibrary.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png\",\"keywords\":[\"Chemical formulae of compounds\",\"Chemical formulae of elements\",\"Order of Elements in a Chemical Formula\",\"Rules for writing a chemical formula\",\"Significance of the formula of a substance\",\"What is Chemical Formula?\",\"Writing the formula of a compound\"],\"articleSection\":[\"Chemistry\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#respond\"]}]},{\"@type\":\"Person\",\"@id\":\"https:\/\/cbselibrary.com\/#\/schema\/person\/bd70dda77c8f886a86b7f2142f75d9c2\",\"name\":\"Raju\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\/\/cbselibrary.com\/#personlogo\",\"inLanguage\":\"en-US\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/38ccf4a5413b0ede9fc79802993d6981?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/38ccf4a5413b0ede9fc79802993d6981?s=96&d=mm&r=g\",\"caption\":\"Raju\"},\"url\":\"https:\/\/cbselibrary.com\/author\/raju\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"How do you know the Order of Elements in a Chemical Formula - CBSE Library","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/","og_locale":"en_US","og_type":"article","og_title":"How do you know the Order of Elements in a Chemical Formula","og_description":"How do you know the Order of Elements in a Chemical Formula What is Chemical Formula? A chemical formula is a representation of a chemical substance using letters for atoms and subscript numbers to show the numbers of each type of atoms that are present in the substance. Based on the chemical formula of a ... Read more","og_url":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/","og_site_name":"CBSE Library","article_publisher":"https:\/\/www.facebook.com\/aplustopper\/","article_published_time":"2020-11-29T23:33:21+00:00","article_modified_time":"2020-11-30T05:20:56+00:00","og_image":[{"url":"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png"}],"twitter_card":"summary","twitter_misc":{"Written by":"Raju","Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Organization","@id":"https:\/\/cbselibrary.com\/#organization","name":"Aplus Topper","url":"https:\/\/cbselibrary.com\/","sameAs":["https:\/\/www.facebook.com\/aplustopper\/"],"logo":{"@type":"ImageObject","@id":"https:\/\/cbselibrary.com\/#logo","inLanguage":"en-US","url":"https:\/\/cbselibrary.com\/wp-content\/uploads\/2018\/12\/Aplus_380x90-logo.jpg","contentUrl":"https:\/\/cbselibrary.com\/wp-content\/uploads\/2018\/12\/Aplus_380x90-logo.jpg","width":1585,"height":375,"caption":"Aplus Topper"},"image":{"@id":"https:\/\/cbselibrary.com\/#logo"}},{"@type":"WebSite","@id":"https:\/\/cbselibrary.com\/#website","url":"https:\/\/cbselibrary.com\/","name":"CBSE Library","description":"Improve your Grades","publisher":{"@id":"https:\/\/cbselibrary.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/cbselibrary.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"ImageObject","@id":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#primaryimage","inLanguage":"en-US","url":"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png","contentUrl":"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png","width":335,"height":96,"caption":"How do you know the Order of Elements in a Chemical Formula 1"},{"@type":"WebPage","@id":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#webpage","url":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/","name":"How do you know the Order of Elements in a Chemical Formula - CBSE Library","isPartOf":{"@id":"https:\/\/cbselibrary.com\/#website"},"primaryImageOfPage":{"@id":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#primaryimage"},"datePublished":"2020-11-29T23:33:21+00:00","dateModified":"2020-11-30T05:20:56+00:00","breadcrumb":{"@id":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/cbselibrary.com\/order-elements-chemical-formula\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/cbselibrary.com\/"},{"@type":"ListItem","position":2,"name":"How do you know the Order of Elements in a Chemical Formula"}]},{"@type":"Article","@id":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#article","isPartOf":{"@id":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#webpage"},"author":{"@id":"https:\/\/cbselibrary.com\/#\/schema\/person\/bd70dda77c8f886a86b7f2142f75d9c2"},"headline":"How do you know the Order of Elements in a Chemical Formula","datePublished":"2020-11-29T23:33:21+00:00","dateModified":"2020-11-30T05:20:56+00:00","mainEntityOfPage":{"@id":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#webpage"},"wordCount":1270,"commentCount":0,"publisher":{"@id":"https:\/\/cbselibrary.com\/#organization"},"image":{"@id":"https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#primaryimage"},"thumbnailUrl":"https:\/\/cbselibrary.com\/wp-content\/uploads\/2016\/09\/How-do-you-know-the-Order-of-Elements-in-a-Chemical-Formula-1.png","keywords":["Chemical formulae of compounds","Chemical formulae of elements","Order of Elements in a Chemical Formula","Rules for writing a chemical formula","Significance of the formula of a substance","What is Chemical Formula?","Writing the formula of a compound"],"articleSection":["Chemistry"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/cbselibrary.com\/order-elements-chemical-formula\/#respond"]}]},{"@type":"Person","@id":"https:\/\/cbselibrary.com\/#\/schema\/person\/bd70dda77c8f886a86b7f2142f75d9c2","name":"Raju","image":{"@type":"ImageObject","@id":"https:\/\/cbselibrary.com\/#personlogo","inLanguage":"en-US","url":"https:\/\/secure.gravatar.com\/avatar\/38ccf4a5413b0ede9fc79802993d6981?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/38ccf4a5413b0ede9fc79802993d6981?s=96&d=mm&r=g","caption":"Raju"},"url":"https:\/\/cbselibrary.com\/author\/raju\/"}]}},"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/cbselibrary.com\/wp-json\/wp\/v2\/posts\/2426"}],"collection":[{"href":"https:\/\/cbselibrary.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cbselibrary.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cbselibrary.com\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/cbselibrary.com\/wp-json\/wp\/v2\/comments?post=2426"}],"version-history":[{"count":0,"href":"https:\/\/cbselibrary.com\/wp-json\/wp\/v2\/posts\/2426\/revisions"}],"wp:attachment":[{"href":"https:\/\/cbselibrary.com\/wp-json\/wp\/v2\/media?parent=2426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cbselibrary.com\/wp-json\/wp\/v2\/categories?post=2426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cbselibrary.com\/wp-json\/wp\/v2\/tags?post=2426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}