| The mass number gives you the total number of protons and neutrons in the nucleus of that element. |
| The successive beta decays constitute an isobaric, fission-product decay chain for each mass number. |
| Division of the binding energy EB by A, the mass number, yields the binding energy per nucleon. |
| The atomic masses can be measured in dalton atom-1: if it is a question of the mass of one isotope, is necessary to specify its own mass number. |
| The baryonic number, which is equivalent to the atomic mass number, has to remain constant for a reaction. |
| The sum of the protons and neutrons is called the mass number. |
