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How do the mass number and atomic change as a particle goes through beta decay

User Matt Bond
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It never changes within the matter of things
User Gibran
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Answer:

The atomic mass number does not change because a beta particle has a much smaller mass than an atom. The atomic number goes up because a neutron has turned into an extra proton, however in beta decay a fast-moving electron is fired out of the nucleolus

Hope this helped!

User Brad Whitaker
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