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Question

If the formula of a metal nitride is MN, the formula of the metal sulphate will be?


A

M(SO4)2

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B

MSO4

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C

M3(SO4)2

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D

M2(SO4)3

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Solution

The correct option is D

M2(SO4)3


From formula of metal nitride, MN, we find that charge of M is +3 as the charge of nitrogen is -3 and both balance each other to form the formulae MN. Since, we know that charge of sulphate is -2.

Symbol M SO4

Valency 3+ 2-

Criss crossing the valencies, we get M2(SO4)3

Therefore formula of metal sulphate is M2(SO4)3​.


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