Question

What are some examples of alpha particles?

Answer 1

Helium-4 nucleus

Explanation:

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.