Consider [ ML 6 ] perfect octahedral complex which is high spin complex and find which distribution of electron is possible in its t 2 g and e g orbitals :-

Question

Consider [ ML 6 ​ ] perfect octahedral complex which is high spin complex and find which distribution of electron is possible in its t 2 g ​ and e g ​ orbitals :-

TestHub · Accepted Answer

For a high-spin octahedral complex, electrons occupy all five d-orbitals singly before pairing (Hund's rule).

Check the options:

A. $t_{2 g}^{3} e_{g}^{1}$ → d⁴ high spin, but $e_{g}$ is unsymmetrical

B. $t_{2 g}^{6} e_{g}^{0}$ ** → d⁶ low spin

C. $t_{2 g}^{3} e_{g}^{2}$ → d⁵ high spin; all five d-electrons are unpaired and distributed symmetrically

D. $t_{2 g}^{6} e_{g}^{1}$ → d⁷ low-spin/unsymmetrical

Since a perfect octahedral complex should not undergo Jahn–Teller distortion, the symmetric high-spin arrangement is:

Answer: C ( $t_{2 g}^{3} e_{g}^{2}$ )

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Options:

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