Question:
The metal that forms nitride by reacting directly with $\mathrm{N}_{2}$ of air, is :
Correct Option: , 3
Solution:
Only Li react directly with $\mathrm{N}_{2}$ out of alkali metals
$6 \mathrm{Li}+\mathrm{N}_{2} \rightarrow 2 \mathrm{Li}_{3} \mathrm{~N}$
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