An isotope of hydrogen that contains one neutron and one proton in its nucleus. In normal water a deuterium atom occurs in 1 in 6,500 hydrogen atoms. Deuterium behaves like hydrogen in chemical reactions, but behaves significantly differently in nuclear reactions.

Harold C. Urey, F. G. Brickwedde, and G. M. Murphy.

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Mass number 2 Clip
Atomic / Molecular Weight 2.014102 gmol-1Clip
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See also: Deuteron, Heavy Water, Hydrogen, Tritium.

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Subjects: Chemistry