JEE Mains Chemistry Past PapershardMCQ SINGLE

The correct order of the following complexes in terms of their crystal filed stabilization energies JEE Mains Chemistry Past Papers Chemistry Question

Question

The correct order of the following complexes in terms of their crystal filed stabilization energies is : (A) [Co(en)3]3+ < [Co(NH3)6]3+ < [Co(NH3)6]2+ < [Co(NH3)4]2+ (B) [Co(NH3)6]2+ < [Co(NH3)6]3+ < [Co(NH3)4]2+ < [Co(en)3]3+ (C) [Co(NH3)4]2+ < [Co(NH3)6]2+ < [Co(NH3)6]3+ < [Co(en)3]3+ (D) [Co(NH3)4]2+ < [Co(NH3)6]2+ < [Co(en)3]3+ < [Co(NH3)6]3+

Answer: C

💡 Solution & Explanation

Order of CFSE [Co(NH3)4]+2 < [Co(NH3)6]+2 < [Co(NH3)6]+3 < [Co(en)3]+3 Charge  CFSE  On increasing strength of ligand, CFSE

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