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Match list I with list II and select the correct answer using the codes given below the lists.
List I
Metal ion List II
Magnetic moment (BM)
A) Cr³⁺ P) $\sqrt{35}$
B) Fe²⁺ Q) $\sqrt{30}$
C) Ni²⁺ R) $\sqrt{24}$
D) Mn²⁺ S) $\sqrt{15}$
T) $\sqrt{8}$
(A) (B) (C) (D)
1) P R T S
2) Q R T P
3) S R T P
4) S T R P

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answer is C.

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Detailed Solution

For Cr³⁺=3d³,

μ= $\sqrt{3 (3 + 2)}$ = $\sqrt{15}$ BM

For Fe²⁺=3d⁶,

μ= $\sqrt{4 (4 + 2)}$ = $\sqrt{24}$ BM

For Ni²⁺=3d⁸,

μ= $\sqrt{2 (2 + 2)}$ = $\sqrt{8}$ BM

For Mn²⁺=3d⁵,

μ= $\sqrt{5 (5 + 2)}$ = $\sqrt{35}$ BM

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