sciencestudent100

Have a question on radioactive decay... Radioactive decay is due to isotopes. Isotopes are unstable atoms therefore produce energy via three particles; alpha, beta, gamma. The definition of an isotope, is a substance that has the same number of protons and different number of neutrons. Does this mean an isotope is "the same number of protons and different number of neutrons" compared to the values of that atom in the periodic table?