Question

Which of the following alkali metals when burnt in air forms a mixture of oxide as well as nitride ?

• A. $K$
• B. $Na$
• C. $Li$
• D. $Cs$

Answer 1

Answer: (C)

$Li$

Answer 2

Lithium when burnt in air forms a mixture of oxide as well as nitride. ${4Li +O_2 ->[\Delta] 2Li2O}$, ${6Li +N2 ->[\Delta]2Li3N}$