Question

Electrovalency of metal atom is maximum in :

• A. sodium hydride
• B. calcium carbide
• C. magnesium oxide
• D. aluminium fluoride

Answer 1

The correct option is D aluminium fluoride

A) Sodium hydride, $NaH$ $⟹N{a}^{+}+H^{-}$, electrovalency of $Na$ is $+1$.

B) Calcium carbide, $Ca{C}_2$, electrovalency of $Ca$ is $+2$.

C) Magnesium oxide, $MgO$, electrovalency of $Mg$ is $+2$.

D) Aluminium flouride, $Al{F}_3$, electrovalency of $Al$ is $+3$.

So, electrovalency of metal is maximum in $Al{F}_3$.