Question

Nitrogen reacts with a metal $M$ to produce a compound $X$. This compound $X$, when dissolved in water forms pungent gas $Y$ which can be identified easily by the formation of white fumes in the presence of $HCl$.

Identify the metal $M$.

• A. Calcium
• B. Sodium
• C. Cobalt
• D. Iron

Answer 1

The correct option is A Calcium

Calcium metal reacts with nitrogen to form calcium nitride.

If we consider metal $M$ as calcium.

$3\underset{M}{Ca}+N_2\to C{a}_3{N}_2.$

The calcium nitride would react with water to form $N{H}_3$, which will react with $HCl$ to give white fumes of $N{H}_{4}Cl$ salt.

Thus, the metal $M$ is calcium.

Hence, option (A) is the right answer.