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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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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

User Rigon
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1 Answer

4 votes
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
User Joald
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