JEE Mains Chemistry Past PapershardNUMERICAL

The crystal field splitting energy of [Co(oxalate)3] 3– complex is 'n' times that of the [Cr(oxalateJEE Mains Chemistry Past Papers Chemistry Question

Question

The crystal field splitting energy of [Co(oxalate)3] 3– complex is 'n' times that of the [Cr(oxalate)3] 3– complex. Here 'n' is _____. [Assume 0 >> P]

Answer: .

💡 Solution & Explanation

Pairing energy neglected w.r.t. 0 [Co(ox)3] 3– : Co +3 : d 6 ; t2g 2, 2, 2 eg 0, 0 CFSE =   6 0.4   = –2.4 0 [Cr(ox3)] 3– : Cr +3 : d 3 ; t2g 1, 1, 1 eg 0, 0 CFSE =   3 0.4   = –1.2 0 3 Co Cr (CFSE) (CFSE)    ALLEN

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