Question

The radioactive isotope of Hydrogen is ___________.

Answer 1

1. Protium, Deuterium, and Tritium are forms of Hydrogen.
2. The radioactive isotope of hydrogen with an atomic number of 1, a mass number of 3, and one proton are called Tritium.
3. It has two neutrons, one proton, and one electron.
4. Tritium is a radioactive isotope of hydrogen because it has more neutrons than protons, which renders the nucleus unstable.
5. As a result, Tritium will decay radioactively.