MHT CET Medical202624 April 2026Evening ShiftChemistryCoordination CompoundsActual
Identify the correct match from the following for coordinate complex (column A) and respective geometry (column B) Column A Coordination complex Column B Geometry (A). [ Ni ( CN )₄]⁻² (I). Trigonal bipyramidal (B). [ Ag ( NH ₃)₂]^+ (II). Linear (C). [ Ni ( Cl )₄]²⁻ (III). Tetrahedral (D). [ Fe ( CO )₅] (IV). Square planar
Options
- A(A) - (I), (B) - (II), (C) - (III), (D) - (IV)
- B(A) - (IV), (B) - (II), (C) - (III), (D) - (I)
- C(A) - (I), (B) - (II), (C) - (IV), (D) - (III)
- D(A) - (III), (B) - (IV), (C) - (I), (D) - (II)
Correct answer
B. (A) - (IV), (B) - (II), (C) - (III), (D) - (I)
Step-by-step solution
For [ Ni ( CN )₄]²⁻ , Ni ²⁺ has a 3d^8 configuration. CN ^- is a strong field ligand, causing pairing of electrons. The hybridization is dsp^2 , resulting in a square planar geometry. Thus, (A) matches with (IV). For [ Ag ( NH ₃)₂]^+ , Ag ^+ has a 4d¹⁰ configuration. With a coordination number of 2 , the hybridization is sp , resulting in a linear geometry. Thus, (B) matches with (II). For [ Ni ( Cl )₄]²⁻ , Ni ²⁺ has a 3d^8 configuration. Cl ^- is a weak field ligand, so no pairing occurs. The hybridization is sp^3