Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Davis, Henry Gassaway to Diamond


hydrogen atomic

Deuterium, or heavy hydrogen (D or H2), isotope of hydrogen in which the atomic nucleus contains a neutron as well as a proton, giving it an atomic weight of approximately 2. Deuterium was discovered by H.C. Urey in 1932 and is used as a tracer in biological research, in experiments for particle accelerators, and in the hydrogen bomb.

See also: Hydrogen.

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