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LIST-I contains metal species and LIST-II contains their properties. List-I List-II (I) [Cr(CN) 6 ] 4– (P) t 2g orbitals contain 4 electrons (II) [RuCl 6 ] 2– (Q) μ (spin-only) = 4.9 BM (III) [Cr(H 2 O) 6 ] 2+ (R) low spin complex ion (IV) [Fe(H 2 O) 6 ] 2+ (S) metal ion in 4 + oxidation state (T) d 4 species [Given: Atomic number of Cr = 24, Ru = 44, Fe = 26] Match each metal species in LIST-I with their properties in LIST-II, and choose the correct option

1. I → R, T; II → P, S; III → Q, T; IV → P, Q
2. I → R, S; II → P, T; III → P, Q; IV → Q, T
3. I → P, R; II → R, S; III → R, T; IV → P, T
4. I → Q, T; II → S, T; III → P, T; IV → Q, R

Correct answer: I → R, T; II → P, S; III → Q, T; IV → P, Q

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