The chemical formula of the ionic compound containing copper(II) & sulphate ions is .

{Cu}_{2} {SO}_{4}

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{CuSO}_{4}

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{Cu}_{2} {(SO)}_{2}

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Solution

The correct option is B ${CuSO}_{4}$
The valency of ${C u}^{2 +}$ ion is 2 and that of $(S O_{4})^{2 -}$ ion is 2. So, on cross-multiplication and balancing the valencies, the formula of the ionic compound containing ${C u}^{2 +}$ and $(S O_{4})^{2 -}$ is $C u (S O_{4})$ . It is also called as copper sulphate.

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