The magnetic moments of a complex ion is 2.83 BM. The complex ions is:
A
[V(H2O)6]3+
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B
[Cr(H2O)6]3+
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C
[Cu(CN)4]2−
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D
[MnCl4]2−
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Solution
The correct option is A[V(H2O)6]3+ √n(n+2) = 2.83. Hence n=2 i.e. The number of unpaired electron =2.The compound[V(H2O)6]3+ have 3d2 configuration and 2 unpaired electron. Hence the correct option is A.