Chemistry
Nuclear Physics
Periodic Table

What is the atomic composition of an alpha particle?

Answer

Wiki User
01/14/2011

The alpha particle is the nucleus of 4He, comprising two neutrons and two protons. It has a atomic mass of 4 and a charge of +2. As a result, it is the least penetrating of all the various emissions (alpha, beta, gamma, neutron) but, unfortunately, it can be the most devastating if it is absorbed, for instance, into the lungs.