Question

A certain compound contains magnesium, carbon and nitrogen in the mass ratio $12:12:14$. The formula of the compound is:

• A. $MgCN$
• B. $M{g}_{2}CN$
• C. $M{g}_{2}C{N}_2$
• D. $Mg(CN{)}_2$

Answer 1

The correct option is D $Mg(CN{)}_2$

The ratio of atoms of $Mg$, $C$ and $N$ is,

$Mg:C:N=\frac{12}{24}:\frac{12}{12}:\frac{14}{14}=1:2:2$

So, the formula is $Mg{C}_2{N}_2$.

Option D is correct.