Question

For which of the following $d^{n}$ configuration octahedral complex, cannot exist in both high spin and low spin forms

(I) $d^{3}$

(II) $d^{5}$

(III) $d^{6}$

(IV) $d^{8}$

• A. I, II and III
• B. II, III and IV
• C. I and IV
• D. None of these

Answer 1

Answer: (C)

Octahedral complexes having metal cation with $d^{3}$ and $d^{8}$ configuration cannot be defined in terms of high and low spin complex.