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Q.

Which of the following will have a magnetic moment of 3.9 B.MA) V+2 B) Cr+3 C) Co+2 D) Mn+3E) Ni+2 F)Fe+3

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a

A, B only

b

B,C, E only

c

A, B ,C only

d

A, B, C, E only

answer is C.

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Detailed Solution

V+2, Cr+3 and Co+2 are having d3 - configuration and have 3 unpaired electrons, so their magnetic moment=nn+2=33+2=3.9 B.M
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