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A metal (A) on heating in nitrogen gas...

A metal (A) on heating in nitrogen gas given compound B.B on teratement with `H_(2)O` givens a colourless gas which when passed throught `CuSO_(4)` solution given a dark blue - violet coloured solution . A and B respectivley are :

A

Na and `Na_(3)N`

B

`Mg and Mg(NO_(3))_(2)`

C

`Na and NaNO_(3)`

D

`Mg and Mg_(3)N_(2)`

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The correct Answer is:
D
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