Whenever we form compound from its constituting ions the species are cross multi
ID: 700734 • Letter: W
Question
Whenever we form compound from its constituting ions the species are cross multiplied with the number equal to the valency of the other ions.For example in Cr^+3 and OH^-, OH^- will be multiplied by 3 because cation has 3 unit positive charge and Cr^+3 will be multiplied by 1 because of 1 unit negative charge on anion.So, in this case the empirical formula for the ionic compound is Cr(OH)3 and the name is chromium hydroxide.
In case of Ca^+2 and CO3^-2, both the ions have two unit charge ,so,the empirical formula is CaCO3 and name of compound is calcium carbonate.
Similarly for Na^+1 and IO4^-1 the empirical formula for ionic compound is NaIO4 and it's name is sodium periodate.
Explanation / Answer
Naming ionic compounds with common polyatomic ions Fill in the name and empirical formula of each ionic compound that could be formed from the ions in this table: Some ionic compounds cation anion em name of compound 2+ Ca co 0 Cr OH 0 I0
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