Assertion (A): Electron capture occurs more often than positron emission in heavy elements.
Reason (R): Heavy elements exhibit radioactivity.
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false
Solution:
In heavy nuclei, electron capture is favored over positron emission. So (A) is true. Heavy elements are generally unstable and radioactive. So (R) is true. However, (R) does not explain the preference for electron capture.
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