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Assertion : All the radioactive element ...

Assertion : All the radioactive element are ultimately converted in lead.
Reason : All the elements above lead are unstable.

A

If both the assertion and the reason are true and the reason is the correct explanation of the assertion.

B

If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion

C

If Assertion is true, but the reason is false.

D

If Assertion is false, but the reason is true.

Text Solution

Verified by Experts

The correct Answer is:
3
Explanation : When they are converted into lead, the emission is stopped because the nucleus of lead is stable (or lead is most stable elements in radio active series)
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