Boron always forms covalent compound.
The small size of `B^(3+)` favours formation of covalent compound.

Assertion: Boron always froms covalent bond. Reason: The small size of B^(3+) favours formation of covalent bond.

A covalent compound is-

Boron form covalent compound due to

Boron form covalent compound due to