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Under certain circumstances, a nucleus c...

Under certain circumstances, a nucleus can decay by emitting a particle more massive than an `alpha`-particle. Consider the following decay processes: `"_88^223Ra` `rarr` `"_82^209Pb` + `"_6^14C` , `"_88^223Ra` `rarr` `"_86^219Rn`+ `"_2^4He` .Calculate the Q-values for these decays and determine that both are energetically allowed.

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