Identify the monoatomic and polyatomic ions from the following equation-
$Pb(N{O}_3{)}_2$ + $K_{2}S{O}_4$ $\to$ $2KN{O}_3$ + $PbS{O}_4$

The correct option is D

Monoatomic ions- ${\mathrm{Pb}}^{+2}$, $K^{+}$
Polyatomic ions- ${\mathrm{NO}}_3^{-}$, ${\mathrm{SO}}_4^{-2}$

Monoatomic ions- Ions consisting of only one atom.
Polyatomic ions- Ions consisting of two or more types of atoms.

In the given equation, $P{b}^{+2}$ and $K^{+}$ are the monoatomic ions and ${\mathrm{NO}}_3^{-}$and ${\mathrm{SO}}_4^{-2}$are the polyatomic ions.