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30-05-2016
Chemistry

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An unstable nucleus loses the most mass if the nucleus emits
(1) an alpha particle (3) a positron
(2) a beta particle (4) a gamma ray

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30-05-2016

1. an alpha particle

gamma rays are formally massless, positrons and electrons (beta particles) have negligible mass, but alpha particles have about 4 amu of mass

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