Hydrogen has three isotopes 1h, 2h, and 3h. what is the difference between these three isotopes?

The element Hydrogen has three isotopes. The hydrogen (1H), the deuterium (2H), and tritium (3H) differs in number of their neutrons where hydrogen has none while deuterium has one and tritium has two. They also differ in mass numbers where hydrogen has one while deuterium has two and tritium has three.