Here are some examples: Al2O3. Al2 = Aluminium; O3 = Oxygen. So the name would be “aluminium oxide. ” FeCl3. Fe = Iron; Cl3 = Chlorine. So the name would be “iron chloride. " SnO2. Sn = Tin; O2 = Oxygen. So the name of this compound would be Tin Oxide.

Example: FeCl2 and FeCl3. Fe = Iron; Cl2 = Chloride -2; Cl3 = Chloride -3. The names would be iron(II) chloride and iron(III) chloride.

Add a hydrogen to the beginning of the compound. The word “hydrogen” is added to the beginning of the compound name. This reduces the negative charge by one. For example, “carbonate” CO32- becomes “hydrogen carbonate” HCO3-. {“smallUrl”:“https://www. wikihow. com/images/thumb/f/fd/Name-Chemical-Compounds-Step-4Bullet1. jpg/v4-460px-Name-Chemical-Compounds-Step-4Bullet1. jpg”,“bigUrl”:”/images/thumb/f/fd/Name-Chemical-Compounds-Step-4Bullet1. jpg/aid1286499-v4-728px-Name-Chemical-Compounds-Step-4Bullet1. jpg",“smallWidth”:460,“smallHeight”:345,“bigWidth”:728,“bigHeight”:546,“licensing”:"<div class="mw-parser-output">

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<br />\n</p></div>"} Remove an oxygen from the compound. The charge stays the same and the ending of the compound changes from “-ate” to “–ite”. For example: NO3 to NO2 goes from “nitrate” to “nitrite. ” {“smallUrl”:“https://www. wikihow. com/images/thumb/1/1f/Name-Chemical-Compounds-Step-4Bullet2. jpg/v4-460px-Name-Chemical-Compounds-Step-4Bullet2. jpg”,“bigUrl”:"/images/thumb/1/1f/Name-Chemical-Compounds-Step-4Bullet2. jpg/aid1286499-v4-728px-Name-Chemical-Compounds-Step-4Bullet2. jpg",“smallWidth”:460,“smallHeight”:345,“bigWidth”:728,“bigHeight”:546,“licensing”:"<div class="mw-parser-output">

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<br />\n</p></div>"} Replace the central atom with another from the same periodic group. For example, sulfate SO42- can become Selenate SeO42-. {“smallUrl”:“https://www. wikihow. com/images/thumb/1/19/Name-Chemical-Compounds-Step-4Bullet3. jpg/v4-460px-Name-Chemical-Compounds-Step-4Bullet3. jpg”,“bigUrl”:"/images/thumb/1/19/Name-Chemical-Compounds-Step-4Bullet3. jpg/aid1286499-v4-728px-Name-Chemical-Compounds-Step-4Bullet3. jpg",“smallWidth”:460,“smallHeight”:345,“bigWidth”:728,“bigHeight”:546,“licensing”:"<div class="mw-parser-output">

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Hydroxide ion: OH- Nitrate ion: NO3- Hydrogen carbonate ion: HCO3- Permanganate ion: MnO4- Carbonate ion: CO32- Chromate ion: CrO42- Dichromate ion: Cr2O72- Sulfate ion: SO42- Sulphite ion: SO32- Thiosulfate ion: S2O3<2- Phosphate ion: PO43- Ammonium ion: NH4+

Example: KMnO4. You should recognize the MnO4- ion as permanganate. K is potassium, so the compound is named potassium permanganate. {“smallUrl”:“https://www. wikihow. com/images/thumb/2/29/Name-Chemical-Compounds-Step-6Bullet1. jpg/v4-460px-Name-Chemical-Compounds-Step-6Bullet1. jpg”,“bigUrl”:"/images/thumb/2/29/Name-Chemical-Compounds-Step-6Bullet1. jpg/aid1286499-v4-728px-Name-Chemical-Compounds-Step-6Bullet1. jpg",“smallWidth”:460,“smallHeight”:345,“bigWidth”:728,“bigHeight”:546,“licensing”:"<div class="mw-parser-output">

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<br />\n</p></div>"} Example: NaOH. You should recognize the OH- ion as hydroxide. Na is sodium, so the compound is named sodium hydroxide. {“smallUrl”:“https://www. wikihow. com/images/thumb/4/42/Name-Chemical-Compounds-Step-6Bullet2. jpg/v4-460px-Name-Chemical-Compounds-Step-6Bullet2. jpg”,“bigUrl”:"/images/thumb/4/42/Name-Chemical-Compounds-Step-6Bullet2. jpg/aid1286499-v4-728px-Name-Chemical-Compounds-Step-6Bullet2. jpg",“smallWidth”:460,“smallHeight”:345,“bigWidth”:728,“bigHeight”:546,“licensing”:"<div class="mw-parser-output">

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1 atom – “Mono-“ 2 atoms – “Di-“ 3 atoms – “Tri-“ 4 atoms – “Tetra-“ 5 atoms – “Penta-“ 6 atoms – “Hexa-“ 7 atoms – “Hepta-“ 8 atoms – “Octa-“ 9 atoms – “Nona-“ 10 atoms – “Deca-“

Example: CO would be carbon monoxide and CO2 would be carbon dioxide. {“smallUrl”:“https://www. wikihow. com/images/thumb/f/f0/Name-Chemical-Compounds-Step-9Bullet1. jpg/v4-460px-Name-Chemical-Compounds-Step-9Bullet1. jpg”,“bigUrl”:"/images/thumb/f/f0/Name-Chemical-Compounds-Step-9Bullet1. jpg/aid1286499-v4-728px-Name-Chemical-Compounds-Step-9Bullet1. jpg",“smallWidth”:460,“smallHeight”:345,“bigWidth”:728,“bigHeight”:546,“licensing”:"<div class="mw-parser-output">

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<br />\n</p></div>"} Example: N2S3 would be Dinitrogen trisulfide. {“smallUrl”:“https://www. wikihow. com/images/thumb/d/d0/Name-Chemical-Compounds-Step-9Bullet2. jpg/v4-460px-Name-Chemical-Compounds-Step-9Bullet2. jpg”,“bigUrl”:"/images/thumb/d/d0/Name-Chemical-Compounds-Step-9Bullet2. jpg/aid1286499-v4-728px-Name-Chemical-Compounds-Step-9Bullet2. jpg",“smallWidth”:460,“smallHeight”:345,“bigWidth”:728,“bigHeight”:546,“licensing”:"<div class="mw-parser-output">

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<br />\n</p></div>"} In most cases, the “mono-“ prefix can be omitted, because it is implied when it is not present. It is still used for carbon monoxide due to the term being in use since early chemistry. {“smallUrl”:“https://www. wikihow. com/images/thumb/6/68/Name-Chemical-Compounds-Step-9Bullet3. jpg/v4-460px-Name-Chemical-Compounds-Step-9Bullet3. jpg”,“bigUrl”:"/images/thumb/6/68/Name-Chemical-Compounds-Step-9Bullet3. jpg/aid1286499-v4-728px-Name-Chemical-Compounds-Step-9Bullet3. jpg",“smallWidth”:460,“smallHeight”:345,“bigWidth”:728,“bigHeight”:546,“licensing”:"<div class="mw-parser-output">

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