Q24 of 30 Page 213

Explain a beta decay process with an example. Tritium has a half-life of 12.5y undergoing beta decay. What fraction of a sample of pure tritium will remain un-decayed after 25 y?

In beta decay, a neutron decays into a proton, an electron and an antineutrino.


n(neutrino) → e-(electron) + e+(proton) +

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