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The maggnetic moment of divalent ion in ...

The maggnetic moment of divalent ion in aqueous solution with atomic number 25 is

A

`3.0` BM

B

`4.9` BM

C

`5.9` BM

D

`6.9` BM

Text Solution

Verified by Experts

The correct Answer is:
C
`M(Z = 25) : 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 4s^(2) 3d^(5)`
`M^(2+) : 1s^(2) 2s^(2) 2p^(6) 3s^(2) 3p^(6) 3d^(5)`
No. of unpaired electron =5
Magnetic moment `= sqrt(n(n+2)) = sqrt(5(5+2))`
`= sqrt(35) =5.9 BM`
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