MCQ
Among $K{O_2},$ $NO_2^ - ,$ $Ba{O_2}$ and $NO_2^ + $ unpaired electron is present in
  • A
    $NO_2^ + $ and $Ba{O_2}$
  • B
    $K{O_2}$ and $Ba{O_2}$
  • $K{O_2}$ only
  • D
    $Ba{O_2}$ only

Answer

Correct option: C.
$K{O_2}$ only
c
(c) $K{O_2}$ because in $O_2^ - $ (superoxide ion) One unpaired electron is present in the antibonding orbital.

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