atomic element
21Atomic beam — is special case of particle beam; it is the collimated flux (beam) of neutral atoms.The imaging systems using the slow atomic beams can use the Fresnel zone plate (Fresnel diffraction lens) of a Fresnel diffraction mirror as focusing element. The …
22element 110 — n. a radioactive chemical element with a very short half life: a transactinide produced by bombarding any of various heavy elements, esp. lead, with high energy nuclear particles: at. no., 110; ununnilium: see the periodic table of elements in… …
23element 111 — n. a radioactive chemical element with a very short half life: a transactinide produced by bombarding bismuth with nickel atoms: at. no., 111; unununium: see the periodic table of elements in the Reference Supplement * * * element 111 n. An… …
24element 112 — n. a radioactive chemical element with a very short half life: a transactinide produced by bombarding lead with zinc ions: at. no., 112; ununbium: see the periodic table of elements in the Reference Supplement * * * element 112 n. An artificially …
25Element 80 — may refer to:*Mercury (element), with an atomic number of 80. *Element Eighty, a rock band from Texas, USA …
26atomic theory — n 1) a theory of the nature of matter: all material substances are composed of minute particles or atoms of a comparatively small number of kinds and all the atoms of the same kind are uniform in size, weight, and other properties called also… …
27atomic volume — n. Chem. the quotient obtained by dividing the atomic weight of an element by its density …
28atomic number — ► NOUN ▪ the number of protons in the nucleus of a chemical element s atom, which determines its place in the periodic table …
29atomic cocktail — ☆ atomic cocktail n. a dose of medicine to be swallowed, containing a radioactive element, used in medical treatment and diagnosis, as of cancer …
30Atomic number — See also: List of elements by atomic number An explanation of the superscripts and subscripts seen in atomic number notation. In chemistry and physics, the atomic number (also known as the proton number) is the number of protons found in the… …
