deuterium

deu·te·ri·um

D0175900 (do͞o-tîr′ē-əm, dyo͞o-)n. A naturally occurring isotope of hydrogen, H-2, having one proton and one neutron in the nucleus.

[deuter(o)- + -ium.]

deuterium

(djuːˈtɪərɪəm) n (Elements & Compounds) a stable isotope of hydrogen, occurring in natural hydrogen (156 parts per million) and in heavy water: used as a tracer in chemistry and biology. Symbol: D or ²H; atomic no: 1; atomic wt: 2.014; boiling pt: –249.7°C[C20: New Latin; see deutero-, -ium; from the fact that it is the second heaviest hydrogen isotope]

deu•te•ri•um

(duˈtɪər i əm, dyu-)

n. an isotope of hydrogen, having twice the mass of ordinary hydrogen; heavy hydrogen. Symbol: D; at. wt.: 2.01; at. no.: 1. [1933; < Greek deúter(os) second (see deutero-)]

deu·te·ri·um

(do͞o-tîr′ē-əm) An isotope of hydrogen whose nucleus has one proton and one neutron and whose atomic mass is 2. Deuterium is used widely as a tracer for analyzing chemical reactions, and it combines with oxygen to form heavy water. Also called heavy hydrogen. See more at hydrogen. See Note at heavy water.

deuterium

An isotope of hydrogen. Its nucleus contains one proton and one neutron and has a relative atomic mass of two.

Thesaurus

Noun

deuterium - an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)heavy hydrogenisotope - one of two or more atoms with the same atomic number but with different numbers of neutronshydrogen atom - an atom of hydrogen

Translations

deuterium

(do͞otēr`ēəm), isotope of hydrogenhydrogen
[Gr.,=water forming], gaseous chemical element; symbol H; at. no. 1; interval in which at. wt. ranges 1.00784–1.00811; m.p. −259.14&degC;; b.p. −252.87&degC;; density 0.08988 grams per liter at STP; valence usually +1.
..... Click the link for more information. with mass no. 2. The deuterium nucleus, called a deuteron, contains one proton and one neutron. Deuterium is also called heavy hydrogen, and water in which the hydrogen atoms are deuterium is called heavy water (deuterium oxide, D₂O). Deuterons are sometimes used in particle accelerators, and heavy water is used in "swimming pool" nuclear reactors as a moderator.

deuterium

(dew-teer -ee-ŭm) See hydrogen.

Deuterium

(heavy hydrogen; represented by D or²H), a stable hydrogen isotope having mass number 2. Deuteron is the nucleus of the deuterium atom. The large difference between the masses of D and ‘H leads to significant differences in their properties (for example, the boiling point of normal hydrogen is 20.39°K, whereas the boiling point of deuterium is 23.57°K; the rates of some chemical reactions differ by a factor of 5–10 for substances containing D and ¹H).

In industry deuterium is isolated by using isotopic exchange between water and hydrogen sulfide (deuterium is distributed unevenly between these compounds, concentrating in H²O), by the distillation of liquid hydrogen, and by the multistep electrolysis of water. Deuterium is used as a component of the hydrogen bomb, and in the future it may become a thermonuclear fuel in energetics. In scientific research it is used as an isotope tracer. Heavy water D₂O serves as a neutron moderator in atomic reactors. Deuterium was discovered spectrally in 1932 by the American scientist H. Urey and his co-workers.

REFERENCES

Brodskii, A. I. Khimiia izotopov, 2nd ed. Moscow, 1957.
Kirschenbaum, I. Tiazhelaia voda. Moscow, 1953. (Translated from English.)

deuterium

[dü′tir·ē·əm] (chemistry) The isotope of the element hydrogen with one neutron and one proton in the nucleus; atomic weight 2.0144. Designated D, d, H², or ²H.

deuterium

a stable isotope of hydrogen, occurring in natural hydrogen (156 parts per million) and in heavy water: used as a tracer in chemistry and biology. Symbol: D or ²H; atomic no.: 1; atomic wt.: 2.014; boiling pt.: --249.7?C.

deuterium

(D) [doo-tēr´e-um] the mass 2 isotope of hydrogen; it is available as a gas or heavy water and has been used as a tracer or indicator in metabolic studies.

hy·dro·gen 2

(²H) (hī'drō-jen) The isotope of hydrogen 2 of atomic weight 2; the less common stable isotope of hydrogen-2 making up 0.015% of the hydrogen-2 atoms occurring in nature.
Synonym(s): deuterium.

hy·dro·gen

(hī'drō-jen) 1. Gaseous element, atomic no. 1, atomic wt. 1.00794. 2. Molecular form (H₂) of the element. [hydro- + G. -gen, producing]

deuterium

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deuterium

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deuterium

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Deuterium

REFERENCES

deuterium

deuterium

deuterium

deuterium

hy·dro·gen 2

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deuterium

Synonyms for deuterium

noun an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)

Synonyms

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