Question

Superoxides of alkali metals are paramagnetic. Superoxides contain $O_2^-$ ion which has one unpaired electron.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

If both assertion and reason are true and reason is the correct explanation of assertion

Answer 2

Superoxide of alkali metals are paramagnetic as superoxide ion $O _{2}^{-}$has three electron bonds i.e. it has one unpaired electron which makes it paramagnetic.