The emission of a β⁻ particle occurs when a nucleus with an excess of neutrons undergoes a weak nuclear interaction, transforming one neutron into a proton and an electron, with the electron being ejected from the nucleus as the beta particle. This process decreases the neutron count by one and increases the proton count by one, changing the element's atomic number but keeping its mass number the same. An electron antineutrino is also emitted in this process.
Mechanism for the emission of β⁻ particle from nucleus is that in which?
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