The sulphate of a metal has the formula M_2(S | vedclass

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(D) The formula of the metal sulphate is given as $M_2(SO_4)_3$. Since the sulphate ion is $SO_4^{2-}$,the total negative charge is $3 	imes (-2) = -

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$MPO_4$

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(D) The formula of the metal sulphate is given as $M_2(SO_4)_3$. Since the sulphate ion is $SO_4^{2-}$,the total negative charge is $3 	imes (-2) = -6$. To maintain electrical neutrality,the metal ion $M$ must have a total positive charge of $+6$. Since there are two $M$ atoms,the charge on each metal ion is $M^{3+}$. The phosphate ion is $PO_4^{3-}$. Combining $M^{3+}$ and $PO_4^{3-}$ in a $1:1$ ratio gives the formula $MPO_4$.

The sulphate of a metal has the formula $M_2(SO_4)_3$. The formula for its phosphate will be

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