Question

${\text{(NH}}_4{)}^{+}$, $({\text{SO}}_4{)}^{2-}$ are examples of .

• A. monoatomic ions
• B. polyatomic ions
• C. compounds
• D. elements

Answer 1

The correct option is B polyatomic ions

Ions which consist of more than one element are called polyatomic ions.

${\text{(NH}}_4{)}^{+}$ ion consists of both nitrogen and hydrogen and ${\text{(SO}}_4{)}^{2-}$ ion consists of sulphur and oxygen. Therefore, they are polyatomic ions