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In the following, two statement are given one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these question from the codes (i), (ii), (iii) and (iv) as given below :
Assertion (A) : Low spin tetrahedral complexes are rarely observed.
Reason (R) : The orbital splitting energies are not sufficiently large to force pairing.
Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
Both Assertion (A) and Reason (R) are correct statements, but Reason (R) is not the correct explanation of the Assertion (A).
Assertion (A) is correct, but Reason (R) is an incorrect statement.
Assertion (A) is incorrect, but Reason (R) is a correct statement.
Answers (1)
As we have learnt,
Tetrahedral splitting is usually small and as a result, the process of pairing requires more energy as opposed to electron occupying the higher energy level in the tetrahedral field.
Hence, spin pairing is not seen and as a result, low spin tetrahedral complexes are seldom seen.
Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is the correct explanation of the Assertion (A).
Hence, the correct answer is Option (1)
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