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A neutron in the nucleus of the tritium atom decays into a proton and an electron and an antielectron neutrino. The proton remains in the nucleus causing the atomic number to increase by 1 as the atom becomes that of a different element while mass number remains the same, He3. The electron and antielectron neutrino are emitted from the nucleus.

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What is a beta emitter?

In physics, an alpha emitter is a radioactive substance which decays by emitting alpha particles.


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