what is an example of a beta particle
After a radioactive nucleus has emitted a beta particle, the mass number stays the same and the atomic number goes up by 1. A neutron in the nucleus has changed into a proton plus an electron. The proton stays inside the nucleus but the electron is emitted as a beta particle.ome nuclei can decay by emitting either an alpha particle or a beta particle. An example is bismuth where 1/3 of the atoms emit an alpha particle and 2/3 of the atoms emit a beta particle. You can work out which particle is emitted by balancing the equation.