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Q.

Magnetic moment of $O_{2}$ is nearly

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a

$1.8 BM$

b

$2.8 BM$

c

$3.8 BM$

d

Zero

answer is B.

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Detailed Solution

Number of unpaired electrons in $O_{2}$ is 2

Question Image

Therefore, the magnetic moment $= \sqrt{n (n + 2)}$

$= \sqrt{2 (2 + 2)} = \sqrt{8} = 2.82 BM$

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Magnetic moment of O2 is nearly