An alpha particle is also a helium-4 nucleus, so it is written as \(_{2}^{4}\textrm{He}\) and is also sometimes written as \(_{2}^{4}\textrm{\alpha}\) A beta particle has a relative mass of zero ...

Alpha decay equation: to complete the decay equation in the exam, start by filling in the numbers for the alpha particle. Sometimes, it is also written as: \(_{-1}^{~0}\beta\). 1. An unstable ...