What are some examples of alpha particles?

1 Answer
Apr 14, 2018

Helium-4 nucleus


Alpha particles are particles that escape from an unstable atomic nucleus that has undergone alpha decay.

There is only one alpha particle, and that is the helium-4 nucleus, #""_2^4He#. Note that only the nucleus is given out, not the electrons, so an alpha particle always has a charge of #+2#, due to the presence of two protons.