Isotopes
The ordinary isotope of hydrogen, H, is known as Protium, the other two isotopes are Deuterium (a
proton and a neutron) and Tritium (a protron and two neutrons). Hydrogen is the only element whose
isotopes have been given different names. Deuterium and Tritium are both used as fuel in nuclear fusion
reactors. One atom of Deuterium is found in about 6000 ordinary hydrogen atoms.
Deuterium is used as a moderator to slow down neutrons. Tritium atoms are also present but in much
smaller proportions. Tritium is readily produced in nuclear reactors and is used in the production of the
hydrogen (fusion) bomb. It is also used as a radioactive agent in making luminous paints, and as a tracer.
Sources: CRC Handbook of Chemistry and Physics and the American Chemical Society.
Last Updated: 12/19/97, CST Information Services Team
Hydrogen