In which of the following coordination entities the magnitude of Δo (CFSE in the octahedral field) will be maximum?(Atomic number Co = 27) - Zigya
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In which of the following coordination entities the magnitude of Δo (CFSE in the octahedral field) will be maximum?
(Atomic number Co = 27)

  • [Co(H2O)6]3+

  • [CO(NH3)6]3+

  • [CO(CN)6]3-

  • [CO(CN)6]3-


C.

[CO(CN)6]3-

The magnitude of Δoct (the orbital splitting energy) is decided by the nature of ligand. Strong field ligand has highest Δoct .The increasing field strength is as


The CN- is the strongest ligand among these hence the magnitude of Δoct will be maximum in [Co(CN)6]3-

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