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Assertion : Magnetic moment values of ac...

Assertion : Magnetic moment values of actinides are lesser than the theoretically predicted values.
Reason : Actinide elements are strongly paramagnetic.

A

If both (A) and (R) are correct and (R) is the correct explanation of(A).

B

If both (A) and (R) are correct, but(R) is not the correct explanation of (A).

C

If(A) is correct, but (R) is incorrect.

D

If both (A) and (R) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
The magnetic moments are lesser than the theoretically predicted values. This is due to the fact that 5f. electrons of actinides are less effectively shielded which result in quenching of orbital contribution.
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