write all the rules for writing the formulae of compounds
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The rule for writing chemical formula is as follow: Firstly, write the symbols with positive charge valency first. Secondly, write the valency of each atom on the top of its symbol. Thirdly, divide the valency number by their highest common factor ignore the positive or negative radicle.
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The role for writing chemical formula is as follow: first write the symbol with positive charge valency first secondly write the valency of each atom on the top of it symbol thirdly divide the valency number by their highest common factor ignore the positive or negative radicle.
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