Which of the following formula represents lithium imide?
Which of the following formula represents lithium imide?
$\mathrm{L} \mathrm{i}_{3} \mathrm{~N}$
$\mathrm{LiNH}_{2}$
$\mathrm{Li}_{2} \mathrm{NH}$
LiNH
Solution
$\mathbf{L i}_{2} \mathrm{NH}$
The inorganic compound lithium imide has the chemical formula NH. A reaction between lithium amide and lithium hydride can produce this whitish substance.
$\mathrm{LiH}_{2}+\mathrm{LiH} \longrightarrow \mathrm{Li}_{2} \mathrm{NH}+\mathrm{H}_{2}$
Lithium Imlde
The product is sensitive to light and can be disproportionated to generate lithium nitride.