Question

a molecule ofa binary salt contains three metal atms and one nitride atom then how many metal atom are present in one molecule of binary salt of metal containing sulphur? give reasons in support to your answer.
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Answer 1

Dear student,
The binary salt contains one nitride atom from this we can deduce the valency of metal atom.
since there are 3 atoms of metals so the formula will be M₃N.
The valency of metals is 1 .
sulphide has a valency 2 .
so the formula of binary salt will be M₂S.
therefore it will contain 2 metal atoms.