NEETChemistry-f-Block Elements

NEET Chemistry Actinoids vs Lanthanoids Assertion Reason Question

Type: Assertion Reason-conceptual-Medium-Class 12

Assertion (A) : Actinoids form relatively less stable complexes as compared to lanthanoids.

Reason (R) : Actinoids can utilise their 5f orbitals along with 6d orbitals in bonding but lanthanoids do not use their 4f orbital for bonding.

A

Both assertion and reason are true, and reason is the correct explanation of the assertion.

B

Both assertion and reason are true but reason is not the correct explanation of assertion.

C

Assertion is not true but reason is true.

D

Both assertion and reason are false.

Correct Answer

Option B

Detailed Explanation

Both statements are true, but the reason does not explain the assertion. The stability difference is due to other factors.

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