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Ammonia

A metal [X] o...

Question

A metal [X] on heating in nitrogen gas given [Y]. [Y] on treatment with $H_{2} O$ gives a colourless gas which when passed through $C u S O_{4}$ solution gives a blue colour. [Y] is:

M g (N O_{3})_{2}

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M g_{3} N_{2}

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N a N_{3}

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M g O

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Solution

The correct option is A $M g_{3} N_{2}$
$3 M g + N_{2} Δ - \to M g_{3} N_{2}$
[X] [Y]
$M g_{3} N_{2} + 6 H_{2} O \to 3 M g (O H)_{2} + 2 N H_{3}$ (colourless gas)
$C u S O_{4} + 4 N H_{3} \to [C u (N H_{3})_{4}] S O_{4}$ (Blue colour)

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