`La^(3+)` and `Lu^(3+)` areA. Both paramagneticB. Both diamagneticC. ` – InterviewSolution

InterviewSolution

1.	`La^(3+)` and `Lu^(3+)` areA. Both paramagneticB. Both diamagneticC. `La^(3+)` is diamagnetic and `Lu^(3+)` paramagneticD. None of these
Answer» Correct Answer - B `La^(3+) to [Xe] 4f^0 5d^0 6s^0 , Lu^(3+) to [Xe] 4p^14 5d^0 6s^0` No unpaired `e^(-s)` in 4f-orbitals `therefore` diamagnetic

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