The Nucleus decays By -emission. Write Down The Decay Equation And Determine The Maximum Kinetic Energy Of The Emitted Electron. The Atomic Masses Of are 22.994466 u and 22.989770 u respectively.

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Question

The nucleus decays by -emission. Write down the decay equation and determine the maximum kinetic energy of the emitted electron. The atomic masses of are 22.994466 u and 22.989770 u respectively.

easy

Solution

Correct option is

4.374 MeV

The is represented by the equation

Ignoring masses of electron and anti-neutrino, the value of the liberated energy is given by

The energy is shared by nucleus and the electron-antineutrino pair. Since is comparatively very much massive, almost whole of the liberated energy is taken by the electron-antineutrino pair. The electron will carry the maximum energy if the antineutrino carries no energy. Thus, the maximum kinetic energy of emitted electron is 4.374 MeV

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Q10

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