Question

Assertion (A): Actinoids show irregularities in their electronic configurations.
Reason (R): Actinoids are radioactive in nature.

• A. Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of 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 actinoids, focus on their complex electronic configurations and their radioactive nature.

Answer 1

The Correct Option is B

Actinoids exhibit irregularities in their electronic configurations, primarily attributable to the f-orbitals and their electron density. Their radioactivity, however, is not the source of this anomaly; the reason is independent of their electronic configuration.