Coordination CompoundshardMCQ SINGLE⭐ Must-Do

Statement I: is a diamagnetic inner orbital complex. Statement II: Oxalate is a strong field ligand Coordination Compounds Chemistry Question

Question

Statement I: $[Co(C_2O_4)_3]^{3-}$ is a diamagnetic inner orbital complex. Statement II: Oxalate is a strong field ligand for $Co^{3+}$ which forces electron pairing.

Answer: A

💡 Solution & Explanation

With $Co^{3+}$, oxygen donors like oxalate often act as strong field ligands, forcing pairing of the $d^6$ configuration to yield a diamagnetic $d^2sp^3$ complex [29, 41].

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