Discuss the nature of bonding in the coordination entity, [Co(C2O4)3]3- on the basis of valence bond theory. Also, comment on the hybridization and magnetic behavior of the given entity.

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Discuss the nature of bonding in the coordination entity, [Co(C₂O₄)₃]^3- on the basis of valence bond theory. Also, comment on the hybridization and magnetic behavior of the given entity.

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[Co(C₂O₄)₃]^3-

The oxidation state of Co is +3.

Outer configuration of Co = 3d⁷ 4s²

Co³⁺ = 3d⁶ 4s⁰

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Oxalate ion being a strong field ligand pairs up the 3d-electrons, thus two out of the five 3d-orbitals are available for oxalate ions.

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Thus, the hybridization of given entity is d²sp³. Since, all the electrons are paired, the complex is diamagnetic

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