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Initially the nucleus of radium 226 is a...

Initially the nucleus of radium 226 is at rest. It decays due to which and `alpha` particle and the nucleus of radon are created. The released energy during the decay is `4.87` Mev, which appears as the kinetic energy of the two resulted particles `[m_(alpha)=4.002"amu",m_("Rn")=22.017"amu"]`
Kinetic energies of `alpha` particle & radon nucleus are respectively

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