Question

Assertion :Statement $-$ 1 : Super oxide ion is paramagnetic whereas peroxide ion is diamagnetic. Reason: Statement $-$ 2 : Super oxide ion has one unpaired electron whereas per oxide ion has no unpaired electron.

• A. Statement $-$ 1 is true, Statement $-$ 2 is true and Statement $-$ 2 is correct explanation for Statement $-$ 1.
• B. Statement $-$ 1 is true, Statement $-$ 2 is true and Statement $-$ 2 is NOT the correct explanation for Statement $-$ 1.
• C. Statement $-$ 1 is true, Statement $-$ 2 is false.
• D. Statement $-$ 1 is false, Statement $-$ 2 is true.

Answer 1

The correct option is A Statement $-$ 1 is true, Statement $-$ 2 is true and Statement $-$ 2 is correct explanation for Statement $-$ 1.

Super oxide ion $O_2^{-}$ has one unpaired electron whereas per oxide ion $O_2^{-2}$ has no unpaired electron so super oxide is paramagnetic whereas peroxide ion is diamagnetic.