Assertion : Magnetic moment values of actinid | vedclass

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(B) The magnetic moment values of actinides are lower than the theoretically predicted values because the $5f$ electrons are less effectively shielded

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If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

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(B) The magnetic moment values of actinides are lower than the theoretically predicted values because the $5f$ electrons are less effectively shielded by the outer shells. This leads to the quenching of the orbital contribution to the magnetic moment,making the observed values smaller than those calculated using the spin-only formula. While actinides are paramagnetic,the reason provided does not explain why the magnetic moments are lower than predicted.

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

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