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|  DOE-HDBK-1105-2002
Radiological Training for Tritium Facilities
Instructor's Guide
Notes
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I.
PROPERTIES OF TRITIUM - What is tritium?
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Tritium is a radioactive isotope of hydrogen (H). Hydrogen is
the lightest and most abundant element in the universe.
Hydrogen has only one proton in its nucleus. Tritium has, in
addition to the single proton, two neutrons in its nucleus. This
makes it three times heavier than the most common form of
hydrogen.
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A. Isotopes of Hydrogen
1. Protium (H) (99.985% natural
abundance)
2. Deuterium = hydrogen + 1 neutron
(D) (0.015% natural abundance)
3.
Tritium = hydrogen + 2 neutrons (T)
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B.
Symbol for Tritium
Tritium is designated as:
3
T, H- 3, or 1 H
C.
Chemical Properties of Hydrogen/Tritium
Reaction rates may vary from
Tritium "behaves" just like hydrogen
hydrogen.
chemically because it has one proton and one
electron like ordinary hydrogen.
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