(1) An isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
Coined by Harold Urey, an American chemist, from
‘second’ + -ium.
- An isotope of hydrogen formed of one proton and one neutron in each atom - .
- Heavy water is “heavy” because it contains deuterium.
- An atom of the isotope.
- There were about 80 deuteriums for every million protiums, and virtually no tritium.