Question

Assertion (A): Actinoids show wide range of oxidation states.
Reason (R): Actinoids are radioactive in nature.

• A. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Hint:

When studying the actinoids, focus on their ability to exhibit multiple oxidation states, which is a key feature of their chemistry.

Answer 1

The Correct Option is B

The electron configurations of actinoids, specifically the availability of electrons in the 5f, 6d, and 7s orbitals, account for their diverse oxidation states. Although actinoids are inherently radioactive, this characteristic does not cause their variable oxidation states. Consequently, Reason (R) is factually correct but does not explain Assertion (A).