Write the formula of following compounds by using Criss-Cross method: Ammonium dichromate
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Explanation: Criss cross method of writing the chemical formula for compounds is the exchanging of valencies of the ions which form the subscripts of the formula.
4.) Ammonium chloride:
The valency of ammonium ion is +1 and that of chloride ion is -1. Ammonium ion is a polyatomic ion. So, the chemical formula for this compound is NH4Cl
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