charge of a nucleus

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• Charge number — or just valance[1] of an ion is the coefficient that, when multiplied by the elementary charge, gives the ion s charge. [2] For example, the charge on a chloride ion, Cl − , is , where e is the elementary charge. This means the charge number for… …   Wikipedia

• nucleus — [no͞o′klē əs, nyo͞o′klē əs] n. pl. nuclei [no͞o′klēī΄, nyo͞o′klēī΄] or nucleuses [ModL < L, a nut, kernel, for nuculeus, dim. < nux (gen. nucis), NUT] 1. a thing or part forming the center around which other things or parts are grouped or… …   English World dictionary

• Charge radius — The rms charge radius is a measure of the size of an atomic nucleus, particularly of a proton or a deuteron. It can be measured by the scattering of electrons by the nucleus and also inferred from the effects of finite nuclear size on electron… …   Wikipedia

• Nucleus — 1) In cell biology, the structure that houses the chromosomes. 2) In neuroanatomy, a group of nerve cells. * * * 1. In cytology, typically a rounded or oval mass of protoplasm within the cytoplasm of a plant or animal cell; it is surrounded by a… …   Medical dictionary

• nucleus — /ˈnjukliəs / (say nyoohkleeuhs) noun (plural nuclei /ˈnjukliaɪ/ (say nyoohkleeuy) or nucleuses) 1. a central part or thing about which other parts or things are grouped. 2. anything constituting a central part, foundation, or beginning: *There… …  

• Atomic nucleus — A figurative depiction of the helium 4 atom with the electron cloud in shades of gray. In the nucleus, the two protons and two neutrons are depicted in red and blue. This depiction shows the particles as separate, whereas in an actual helium atom …   Wikipedia

• Dorsal raphe nucleus — Brain: Dorsal raphe nucleus Outline of the nucleus raphe dorsalis: DRif interfascicular subnucleus, DRv ventral subnucleus, DRvl ventrolateral subnucleus, DRd dorsal subnucleus, mlf medial longitudinal fasciculus, Aq cerebral aqueduct, IVn… …   Wikipedia

• Effective nuclear charge — Diagram The effective nuclear charge is the net positive charge experienced by an electron in a multi electron atom. The term effective is used because the shielding effect of negatively charged electrons prevents higher orbital electrons from… …   Wikipedia

• Electric charge — SI symbol: Q SI quantity dimension: Q SI unit: coulomb other units: e Derivations from other quantities: Q = I · …   Wikipedia

• Partial charge — A partial charge is a charge with an absolute value of less than one elementary charge unit (that is, smaller than the charge of the electron).Partial atomic chargesPartial charges are created due to the asymmetric distribution of electrons in… …   Wikipedia

• Photoinduced charge separation — is the process of an electron in an atom being excited to a higher energy level and then leaving the atom to a nearby electron acceptor.Rutherford modelAn atom consists of a positively charged nucleus orbitted by electrons. The nucleus consists… …   Wikipedia