In beta minus decay, what is emitted along with the electron?

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Multiple Choice

In beta minus decay, what is emitted along with the electron?

Explanation:
Beta minus decay changes a neutron into a proton, a charged electron, and an antineutrino. The electron is emitted together with the antineutrino, which carries away part of the energy and helps conserve lepton number and angular momentum. A photon would be a gamma ray, not part of this decay; a positron would come from beta plus decay; a neutron is not emitted in beta minus decay. Since the antineutrino is the particle emitted alongside the electron, none of the listed options correctly identifies it.

Beta minus decay changes a neutron into a proton, a charged electron, and an antineutrino. The electron is emitted together with the antineutrino, which carries away part of the energy and helps conserve lepton number and angular momentum. A photon would be a gamma ray, not part of this decay; a positron would come from beta plus decay; a neutron is not emitted in beta minus decay. Since the antineutrino is the particle emitted alongside the electron, none of the listed options correctly identifies it.

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