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NCERT Class XII Chemistry
Chapter - Coordination Compounds
Questions with Solutions

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Question : 18
Total: 43
What is crystal field splitting energy? How does the magnitude of Δo decide the actual configuration of d-orbitals in a coordination entity?
Solution:  
The difference in energies of two sets of d-orbitals t2g and eg is calledcrystal field splitting energy (Δo).
(i) If Δo < P, the configuration will be t2g3eg1 and it is there in case of weakfield ligands and high spin complex will be formed.
(ii) If Δo > P, the configuration will be t2g4eg0 and it is in case of a strong fieldligands and low spin complex will be formed.
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