JEE Mains · Chemistry · STD 12 - 5. Co-ordination chemistry
The correct increasing order of spin-only magnetic moment values of the complex ions
\([MnBr_{4}]^{2-}\) (A), \([Cu(H_{2}O)_{6}]^{2+}\) (B), \([Ni(CN)_{4}]^{2-}\) (C) and \([Ni(H_{2}O)_{6}]^{2+}\) (D) is:
- A A = B < C < D
- B A = B < D < C
- C C = D < B < A
- D C < B < D < A
Answer & Solution
Correct Answer
(D) C < B < D < A
Step-by-step Solution
Detailed explanation
\(Mn^{2+}~3d^{5}~n=5\) \(Cu ^{2+}~3 d^9~t _{2 g}^{2,2,2}~e _{ g }^{2,1} n =1\) \(Ni ^{2+}~3 d^8\) square planar \(n =0\) \(Ni ^{2+}~3 d^8\) tetrahedral \(e ^{2,2}~t _2^{2,1,1}~n =2\)
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