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Question
Write the molecular formulae of all the compounds that can be formed by the combination of the following ions
Cu2+, Na+, Fe3+, C1– , `"SO"_4^-2`, `"PO"_4^3-`
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Solution
C1– , `"SO"_4^-2`, `"PO"_4^3-` anions
CuCl2, CuSO4, Cu3(PO4)2
NaCl, Na2SO4, Na3PO4
FeCl3Fe2(SO4)3, FePO4
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