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Question

The kinetic energy (in keV) of the alpha particle, when the nucleus 21084Po at rest undergoes alpha decay, is
42152.PNG
  1. 5319
  2. 5422
  3. 5707
  4. 5818

A
5422
B
5707
C
5319
D
5818
Solution
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21084Po42He+20682 Pb

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42152.PNG
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