What is deuterium? Here’s a look at what deuterium is, where you might find it, and some of the uses of deuterium.
Hydrogen is unique in that it has three isotopes which are named. Deuterium is one of the isotopes of hydrogen. It has one proton and one neutron. In contrast, the most common isotope of hydrogen, protium, has one proton and no neutrons. Because deuterium contains a neutron, it is more massive or heavier than protium, so it is sometimes called heavy hydrogen . There’s a third hydrogen isotope, tritium, which may also be called heavy hydrogen because each atom contains one proton and two neutrons.