Alpha decay (two protons and two neutrons) changes the mass number of the element by -4 and the atomic number by -2 so the remaining nucleus will be \(_{90}^{234}?\). A periodic table shows that ...

It also means that the process of radioactive decay cannot be speeded up or slowed down by any physical changes such as a change of temperature or pressure. A random process means that scientists ...

Radioactive decay: Scientists use the half-life formula to describe the decay process of radioactive isotopes. It helps determine the rate of decay and predict how much of a substance will remain ...