In ${\beta }^{-}$ decay, which of the following particles is emitted from the nucleus?

Step-by-step solution

1. Identify the type of decay: ${\beta }^{-}$ decay involves the conversion of a neutron into a proton.
2. Recall that a neutron changes to a proton plus an electron and an antineutrino.
3. The emitted charged particle that leaves the nucleus is the electron.
4. Select the option that states "electron".

Concept tested: Particle emitted in beta‑minus decay

Published 8 September 2026 · How this solution was prepared and checked