Statement 1: [Cr(NH_3)_6]^ 3+ is paramagnetic. Statement 2: [Cr(NH_3)_6]^ 3+ shows d^2sp^3 hybridisation.

JEE Advanced Chemistry question

Statement 1: is paramagnetic. Statement 2: shows hybridisation.

(A)Assertion is True, Reason is True; Reason is correct explanation for Assertion
(B)Assertion is True, Reason is True; Reason is not correct explanation for AssertionCorrect
(C)Assertion is True, Reason is False
(D)Assertion is False, Reason is True

Answer: (B)

Solution

has configuration . These 3 electrons occupy the three orbitals singly regardless of ligand field strength (there is no pairing possible or needed with only 3 electrons for 3 orbitals), so the complex always has 3 unpaired electrons — it is paramagnetic, making Statement 1 true. The complex

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Question ID VK-159993