New Collegiate Dictionary. 2001.
atomic number — atomic num·ber nəm bər n an experimentally determined number characteristic of a chemical element that represents the number of protons in the nucleus which in a neutral atom equals the number of electrons outside the nucleus and that determines… … Medical dictionary
atomic number — n. Chem. a number representing the relative position of an element in the periodic table, in which the elements are arranged in the order of their nuclear charges; a number representing the positive charge or the number of protons in the nucleus… … English World dictionary
atomic number — ► NOUN ▪ the number of protons in the nucleus of a chemical element s atom, which determines its place in the periodic table … English terms dictionary
Atomic number — См. Атомный номер Термины атомной энергетики. Концерн Росэнергоатом, 2010 … Термины атомной энергетики
Atomic 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… … Wikipedia
atomic number — the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus. Abbr.: at. no.; Symbol: Z Also called proton number. [1815 25] * * * Number of a… … Universalium
atomic number — UK / US noun [countable] Word forms atomic number : singular atomic number plural atomic numbers chemistry the number of protons in the nucleus of an atom … English dictionary
atomic number — noun the order of an element in Mendeleyev s table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element • Hypernyms: ↑number • Hyponyms: ↑magic number * * * aˌtomic ˈnumber f13… … Useful english dictionary
atomic number — The atomic number was originally defined (about 1865) simply as an index describing the position of an element in the periodic table. Not until 1913 was it known that the atomic number is actually a unit of measurement, equal to the number of… … Dictionary of units of measurement
atomic number — atominis skaičius statusas T sritis Standartizacija ir metrologija apibrėžtis Cheminio elemento eilės numeris periodinėje elementų sistemoje. Apibūdina atomo branduolio protonų skaičių, taip pat atitinkamo neutraliojo atomo elektronų skaičių.… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
atomic number — atominis skaičius statusas T sritis Standartizacija ir metrologija apibrėžtis Protonų skaičius atomo branduolyje. atitikmenys: angl. atomic number; charge number; ordinal number; proton number vok. Atomnummer, f; Atomzahl, f; Kernladungszahl, f;… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
