Match the entries of column I with appro

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Target Exam

CUET

Subject

Chemistry

Chapter

Inorganic: Coordination Compounds

Question:

Match the entries of column I with appropriate entries of column II and choose the correct option out of the four options given.

Column I	Column II
(Metal ion configuration in strong ligand field)	(CFSE, Δ_o value)
(A) d⁴	(p) -1.6
(B) d⁵	(q) -1.8
(C) d⁶	(r) -2.0
(D) d⁷	(s) -2.4

Options:

A-p, B-s, C-r, D-q

A-q, B-r, C-p, D-s

A-p, B-r, C-s, D-q

A-r, B-s, C-p, D-q

Correct Answer:

A-p, B-r, C-s, D-q

Explanation:

Metal ion configuration in strong ligand field

(A) d⁴: t_2g⁴ e_g⁰

CFSE = 4(-0.4Δ_o) = -1.6Δ_o

(B) d⁵: t_2g⁵ e_g⁰

CFSE = 5(-0.4Δ_o) = -2.0Δ_o

CFSE = 6(-0.4Δ_o) = -2.4Δ_o

(D) d⁷ = t_2g⁶ e_g¹

CFSE = 6(-0.4Δ_o) + 1(0.6Δ_o) = -1.8Δ_o