An americium nucleus has 146 neutrons and 95 protons. It undergoes decay by releasing an $\alpha$-particle. After this form of americium decays, how many neutrons and how many protons are left in the nucleus?
Physics 0625 · IGCSE · Radioactivity
An americium nucleus has 146 neutrons and 95 protons. It undergoes decay by releasing an $\alpha$-particle. After this form of americium decays, how many neutrons and how many protons are left in the nucleus?