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NEET levelSingle correct optionDifficulty 1 of 3sb043

On standing in the presence of a catalyst such as rusted iron, a solution of sodium in liquid ammonia slowly gives hydrogen and an ionic compound. The compound is

A $Na X_{2} NH$
B $NaNH X_{2}$
C $Na X_{3} N$
D $NaH$

Answer: B

The reaction is

2 Na + 2 NH X_{3} 2 NaNH X_{2} + H X_{2}

, giving sodamide, and the blue colour fades as the electrons are consumed.

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