1.

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

Answer»

Assertionis CORRECT, REASON is correct, reason is a correct explanation for assertion.
Assertionis correct, reason is correct, reasonis not a correct explanation for assertion
Assertionis correct, reasonis incorrect
Assertion is incorrect, reasonis correct.

SOLUTION : The magneticmoments are lesser than the fact that 5f ELECTRONS of actinides are less EFFECTIVELY shielded which results in quenchingoforbitalcontribution.


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