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 ...

For example lead (lead-206 ... ^{4}\textrm{\alpha}\) A beta particle has a relative mass of zero, so its mass number is zero. As the beta particle is an electron, it can be written as ...