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Question

# Find the magnetic moment (in B.M.) of 23V4+ and 30Zn2+ respectively

A
3 B.M., 0 B.M.
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B
42 B.M., 3 B.M.
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C
12 B.M., 72 B.M.
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D
72 B.M., 12 B.M.
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Solution

## The correct option is A √3 B.M., √0 B.M.Electronic configuration of V = 1s22s22p63s23p64s23d3 Electronic configuration of V4+ = 1s22s22p63s23p63d1 So, number of unpaired electrons 'n' = 1 Magnetic moment = √n(n+2) B.M = √3 B.M. Electronic configuration of Zn = 1s22s22p63s23p64s23d10 Electronic configuration for Zn2+ = 1s22s22p63s23p64s03d10 So. number of unpaired electrons 'n' = 0 Magnetic moment = √n(n+2) B.M = √0 B.M.

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