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Find the Q-value and the kinetic energy ...

Find the Q-value and the kinetic energy of the emitted a-particle in the a-decay of (a) `""_(88)^(226)Ra` and (b) `(86)^(220)Rn`.
Given `m (""_(88)^(226)Ra) = 226.02540 u, " " m (""_(86)^(222)Rn) = 222.01750 u`,
`m (""_(86)^(220)Rn) = 220.01137u, " " m(""_(84)^(216) Po) = 216.00186u`.

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(a) `Q = 4.93 MeV, E_a = 4.85 MeV (b) Q = 6.41 MeV, E_a = 6.29 MeV`
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