Q.

Among the following, the paramagnetic compound is

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a

Na2O2

b

O3

c

N2O

d

KO2

answer is D.

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Detailed Solution

Na2O2 is 2Na+ O22-. There is no unpaired electron either on Na+ or O22-. Hence, it must be diamagnetic. O3 and N2O have even-numbered electrons and thus are diamagnetic.
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