ChemistryJEE Main 23 Jan 2026, Shift 1·Q25·Numerical·Moderate

Coordination Compounds · Crystal field stabilisation energy

The crystal field stabilisation energy of

\ce{[Co(oxalate)3]^{3-}}

complex is ‘n' times that of the

\ce{[Cr(oxalate)3]^{3-}}

complex. Here ‘n' is . [Assume

\Delta_\mathrm{o} \gg P

]

We corrected a printing error in the original paper

Source printed “The crystal field splitting energy”; corrected to the intended “crystal field stabilisation energy” (the splitting $\Delta_\mathrm{o}$ is about the same for both oxalato complexes; the key 2 is the CFSE ratio $-2.4\Delta_\mathrm{o}/-1.2\Delta_\mathrm{o}$ ).

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