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Q.

In an $α -$ decay, the kinetic energy of $α -$ particle is 48 MeV and Q-value of the reaction is 50 MeV. The mass number of the mother nucleus is $\frac{900}{x}$ where x is [Assume the daughter nucleus is in ground state]

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answer is 9.

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Detailed Solution

$K E_{α} = (\frac{A - 4}{A}) Q \Rightarrow A = 100$

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In an α− decay, the kinetic energy of α− particle is 48 MeV and Q-value of the reaction is 50 MeV. The mass number of the mother nucleus is 900x where x is [Assume the daughter nucleus is in ground state]