Chemistry - Complete s-block Question with Solution | TestHub

$\text{Mg}+{\text{N}}_2\to {\text{Mg}}_3{\text{N}}_2\stackrel{{\text{H}}_2\text{O}}{\to }\text{Mg}{(\text{OH})}_2{\text{+NH}}_3$
$\mathrm{C}\mathrm{a}+{\mathrm{N}}_2\to \mathrm{C}{\mathrm{a}}_3{\mathrm{N}}_2\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }\mathrm{C}\mathrm{a}(\mathrm{O}\mathrm{H}{)}_2+\mathrm{N}{\mathrm{H}}_3$
$\mathrm{L}\mathrm{i}+{\mathrm{N}}_2\to \mathrm{L}{\mathrm{i}}_3\mathrm{N}\stackrel{{\mathrm{H}}_2\mathrm{O}}{\to }\mathrm{L}\mathrm{i}\mathrm{O}\mathrm{H}+\mathrm{N}{\mathrm{H}}_3$
$\mathrm{K}+{\mathrm{N}}_2\to$no reaction
Hence, Potassium does not give smell of ammonia.