MCQ
Given below are two statements :
Statement (I): In octahedral complexes, when $\Delta_{ o }$ < P high spin complexes are formed. When $\Delta_{ o }$ > P low spin complexes are formed.
Statement (II): In tetrahedral complexes because of $\Delta_{ t }$ <P, low spin complexes are rarely formed. In the light of the above statements, choose the most appropriate answer from the options given below:
  • A
    Statement I is correct but Statement II is incorrect
  • B
    Both Statement I and Statement II are incorrect
  • C
    Statement I is incorrect but Statement II is correct
  • Both Statement I and Statement II are correct

Answer

Correct option: D.
Both Statement I and Statement II are correct
(D) Both Statement I and Statement II are correct
Explanation: In octahedral complex (CN = 6)
If $\Delta_0$ <P.E., then high spin complexes are formed
If $\Delta_0$ > P.E., then low spin complexes are formed
But in tetrahedral complex (CN = 4)
$\Delta_t$ < P.E., then mainly high spin complexes are formed and rarely low spin complexes are formed.

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