Question

If the chemical formula of metal carbonate is $M_{2}C{O}_3$, then choose the correct option from the following-

1. The chemical formula for metal iodide will be $MI$.
2. The chemical formula for metal nitride will be $M_3{N}_2$.
3. The chemical formula for metal phosphate will be $M_{3}P{O}_4$.

• A. 1 and 2 only
• B. 2 and 3 only
• C. 1 and 3 only
• D. only 2

Answer 1

The correct option is C 1 and 3 only

In compound $M_{2}C{O}_3$, the valency of metal is $+1$.

Therefore, the formula of metal iodide is $MI$ and for metal phosphate is $M_{3}P{O}_3$.

The formula of metal nitride will be $M_{3}N$.

Hence, option $C$ is correct.