First slide

13th group or boron group

Question

$Among {KO}_{2}, {AlO}_{2}^{-}, {BaO}_{2}, and {NO}_{2}^{+} one unpaired$ electron is present in

Moderate

A

$O_{2}^{+} and {BaO}_{2}$
B

${KO}_{2} and {AlO}_{2}^{-}$
C

${KO}_{2} only$
D

${BaO}_{2} only$

Solution

${KO}_{2} has K^{+} O_{2}^{-} structure having on unpaired electron.$

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