Question

Which of these is a polyatomic ion?

• A. ${{SO}_4}^{2-}$
• B. ${{NO}_3}^{-}$
• C. ${{CO}_3}^{2-}$
• D. All of the given options are correct.

Answer 1

The correct option is D

All of the given options are correct.

Polyatomic: Poly- stands for many. Poly-atomic means more than one atom or many atoms.

${{SO}_4}^{2-}$, ${{NO}_3}^{-}$, ${{CO}_3}^{2-}$

All of these ions have more than 1 atom so all are polyatomic.