Statement-I is incorrect but Statement-II is correct

Both Statement-I and Statement-II are correct

Both Statement-I and Statement-II are incorrect

Statement-I is correct but Statement-II is incorrect

$3: 2$

$1: 2$

$2: 1$

$2: 3$

Aluminium has five valence orbitals.

Boron has a maximum covalency of four.

Beryllium has three valence orbitals.

Magnesium has a maximum covalency of four.

Nitrogen can form $p \pi-p \pi$ multiple bonds with itself.

$\quad \mathrm{P}\left(\mathrm{C}_2 \mathrm{H}_5\right)_3$ and $\mathrm{As}\left(\mathrm{C}_6 \mathrm{H}_5\right)_3$ form $\mathrm{d} \pi-\mathrm{d} \pi$ bond with transition metals.

Phosphorus, arsenic and antimony show catenation property.

Nitrogen can form $d \pi-p \pi$ bond with oxygen.