List-I :- Contain information for formation of two complex species List-II :- Correct information for atleast one complex species of a same group of List-I. List-I (P) F e + 3 + C l − → ( CN = 4 ) and

Question

List-I :- Contain information for formation of two complex species List-II :- Correct information for atleast one complex species of a same group of List-I.

List-I
(P) $F e^{+ 3} + C l^{-} \to (CN = 4)$ and $C O^{+ 3} + F^{-} \to (CN = 6)$	(1) Paramagnetic complex species having value of spin only magnetic moment greater than 3 B.M.
(Q) $P t^{+ 2} + C l^{-} \to (CN = 4)$ and $N i^{+ 2} + N H_{3} \to (CN = 6)$	(2) For tetrahedral or octahedral complex species, magnitude of CFSE ranges '0 ≤ CFSE ≤ 2.0 Δ' (neglecting pairing energy)
(R) $C u^{+ 2} + N H_{3} \to (CN = 4)$ and $C d^{+ 2} + K CN (e x cess) \to (CN = 4)$	(3) Diamagnetic or inner orbital cationic complex or both
(S) $M n^{+ 2} + B r^{-} \to (CN = 4)$ and $M n^{+ 2} + C N^{-} \to (CN = 6)$	(4) The species in which ligands satisfy only secondary valency
	(5) Low spin or high spin complex species

TestHub · Accepted Answer

For (P): [ F e C l 4 ​ ] − ( d 5 , tetrahedral) and [ C o F 6 ​ ] 3 − ( d 6 , octahedral) are both high-spin complexes (5) with > 3 B.M. magnetic moments (1) and CFSE ≤ 2.0Δ (2) For (Q): [ PtC l 4 ​ ] 2 − ( d 8 , square planar) is diamagnetic (3), while [ N i ( N H 3 ​ ) 6 ​ ] 2 + ( d 8 , octahedral) has neutral ligands satisfying only secondary valency (4), For (R): [ C u ( N H 3 ​ ) 4 ​ ] 2 + is a cationic complex (3) and [ C d ( CN ) 4 ​ ] 2 − is diamagnetic (3) with a CFSE of zero (2), For (S): [ M n B r 4 ​ ] 2 − ( d 5 , high-spin) and [ M n ( CN ) 6 ​ ] 4 − ( d 5 , low-spin) cover both high and low spin classifications (5) with high magnetic moments (1)

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