Question

Which of these forms nitride with nitrogen at higher temperature?

• A. Aluminium
• B. Boron
• C. Both $A$ and $B$
• D. Indium

Answer 1

Answer: (C)

Both $A$ and $B$

Option $\left(C\right)$ is correct.

Aluminium and boron forms nitride with nitrogen at higher temperature due to the high bond energy of nitrogen. In case of aluminium, a thin oxide layer is formed so it also needs high temperature to react with nitrogen to form the nitride.