Potassium 40 decays to argon 40 by a single electron capture.

Name: Potassium 40 decays to argon 40 by a single electron capture.
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Potassium-40 decays to argon-40 through a process called electron capture, where an electron from the inner shell is captured by the nucleus, combining with a proton to form a neutron and emitting a neutrino. This process changes the potassium-40 atom into an argon-40 atom.

Potassium 40 Decays to Argon 40 by a Single Electron