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Question

A metal M reacts with nitrogen to give nitride which on reaction with water produces ammonia gas. Metal M can be:


A
Na
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B
K
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C
Li
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D
Rb
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Solution

The correct option is A Li
The metal Lithium shows an exceptional behaviour by reacting in atmosphere of nitrogen to give lithium nitride $${Li}_{3}N$$ which upon reaction with water produces ammonia gas. 
$$6Li+ {N}_{2}\rightarrow3{Li}_{3}N$$
$$3Li_{3}N+H_{2}\rightarrow 3LiOH + NH_{3}$$

Chemistry

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