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Assertion: Actinoids show greater number...

Assertion: Actinoids show greater number of oxidation states than lanthanoids. Reason: Actinoids are radioactive.

A

If both assertion and reason are correct and reason is correct explanation for assertion.

B

If both assertion and reason are correct but reason is not correct not correct explanation for assertion.

C

If assertion is correct but reason is incorrect.

D

If both assertion and reason are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Correct explanation. In actinoids, the 5f, 6d and 7s sub-shells are close in energy whereas in lanthanoids, these sub-shells have comparatively large energy gaps.
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