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Assertion : Only those nuclei which are ...

Assertion : Only those nuclei which are heavier than lead are radioactive.
Reason : Nuclei of elements heavier than lead are unstable.

A

(a) If both Assertion and Reason are true and Reason is correct explanation of the Assertion.

B

(b) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

(c) If Assertion is true, but the Reason is false.

D

(d) If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
Some lighter nuclei are also radioactive.
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