By Team Aakash Byju's
– Alpha decay – Beta decay – Gamma decay
Alpha decay is the radioactivity in which an -particle is emitted such that the atomic number decreases by two and the mass number decreases by four.
Generally, an alpha particle is a nucleus of helium. i.e.,
Beta-decay is the type where a neutron is transformed into a proton or vice versa inside the nucleus of the radioactive sample.
When a radioactive sample undergoes Gamma decay, no particles are ejected from the nucleus instead a high-energy form of a photon is released.
Gamma decay usually takes place when a nucleus is in an excited state and has excess energy to be stable.