JEE Main · 2024 · 31 Jan 2024 · Shift 2 · Coordination Compounds

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Match List I with List II:
LIST-I (Complex ion): A. [Cr(H₂O)₆]³⁺ B. [Fe(H₂O)₆]³⁺ C. [Ni(H₂O)₆]²⁺ D. [V(H₂O)₆]³⁺
LIST-II (Electronic Configuration): I. t₂g² eg⁰ II. t₂g³ eg⁰ III. t₂g³ eg² IV. t₂g⁶ eg²
Choose the correct answer from the options given below:

(A)A-III, B-II, C-IV, D-I
(B)A-IV, B-I, C-II, D-III
(C)A-IV, B-III, C-I, D-II
(D)A-II, B-III, C-IV, D-I✓ Correct

Answer: (D)

Solution

All four complexes contain

H_{2} O

, a weak-field ligand, so each metal ion is high spin.

[Cr (H_{2} O)_{6}]^{3 +}

C r^{3 +}

3 d^{3}

→

t_{2 g}^{3} e_{g}^{0}

(matches II).

[Fe (H_{2} O)_{6}]^{3 +}

F e^{3 +}

3 d^{5}

→

t_{2 g}^{3} e_{g}^{2}

(matches III).

[Ni (H_{2} O)_{6}]^{2 +}

N i^{2 +}

3 d^{8}

→

t_{2 g}^{6} e_{g}^{2}

(matches IV).

[V (H_{2} O)_{6}]^{3 +}

V^{3 +}

3 d^{2}

→

t_{2 g}^{2} e_{g}^{0}

(matches I).

Match: A-II, B-III, C-IV, D-I.

JEE Main · 2024 · 31 Jan 2024 · Shift 2 · Single correct option

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JEE Main · 2024 · 31 Jan 2024 · Shift 2 · Coordination Compounds

Solution

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