Question

Name three trivalent anions with their formulae and valencies.

Answer 1

Trivalent anions:

The anions that gain a $-3$ charge on gaining three electrons are called trivalent anions. The valency of such anions is $3$.

Three trivalent anions and their formula is given as:

1. Nitride - ${\mathrm{N}}^{3-}$
2. Phosphide - ${\mathrm{P}}^{3-}$
3. Phosphate - ${\mathrm{PO}}_4^{3-}$

All the trivalent anions have three as their valency.