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^228Themits an alpha particle to reduce ...

`^228Th`emits an alpha particle to reduce to `^224Ra`.Calculate the kinetic energy of the alpha particle emitted in the following decay:
`^228Th rarr ``224Ra**+ alpha`
``224Ra** rarr `224Ra+ gamma(217 keV).`
Atomic mass of ``228Th` is 228.028726 u,that of ``224Ra`is 224.020196 u and that of ``_2^4He` is 4.00260 u.

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