Charge number

Charge number

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 -1 \cdot e, where e is the elementary charge. This means the charge number for the ion is − 1.

z is sometimes used as the symbol for the charge number. In that case, the charge of an ion could be written as Q = ze.

For an atomic nucleus, which can be regarded as an ion having stripped off all electrons, the charge number is identical with the atomic number Z (number of protons).

In particle physics the charge number is a (derived) flavour quantum number, mostly denoted by Q (regarded as 'electric charge in units of e') rather than z. For color charged particles with like quarks and hypothetical leptoquarks the charge number is a broken multiple of 1/3.

See also

References

  1. ^ Dynamic Systems in Neuroscience by Izhikevich
  2. ^ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version:  (2006–) "charge number, z".

Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • charge 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

  • charge 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

  • charge number — atominis skaičius statusas T sritis chemija apibrėžtis Protonų skaičius atomo branduolyje. santrumpa( os) Z atitikmenys: angl. atomic number; charge number; ordinal number; proton number rus. атомное число; атомный номер; зарядовое число;… …   Chemijos terminų aiškinamasis žodynas

  • charge number — atominis skaičius statusas T sritis fizika atitikmenys: angl. atomic number; charge number; ordinal number vok. Atomnummer, f; Atomzahl, f; Kernladungszahl, f; Ordnungszahl, f rus. атомное число, n; атомный номер, m; зарядовое число, n;… …   Fizikos terminų žodynas

  • charge number of ion — jono krūvio skaičius statusas T sritis Standartizacija ir metrologija apibrėžtis Jono ir elementariojo elektros krūvio dalmuo. atitikmenys: angl. charge number of ion vok. Wertigkeit des Ions, f rus. зарядное число иона, n pranc. nombre de charge …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • charge number of ion — jono krūvio skaičius statusas T sritis fizika atitikmenys: angl. charge number of ion vok. Wertigkeit des Ions, f rus. зарядное число иона, n pranc. nombre de charge d’ion, m …   Fizikos terminų žodynas

  • CHARGE syndrome — Classification and external resources Ear form characteristic of a person with CHARGE syndrome, along with her cochlear implant. OMIM 214 …   Wikipedia

  • Charge transfer coefficient — Charge transfer coefficient, and symmetry factor (symbols α and β, respectively) are two related parameters used in description of the kinetics of electrochemical reactions. They appear in the Butler Volmer equation and related expressions. The… …   Wikipedia

  • Charge ordering — (CO) is a (first or second order) phase transition occurring mostly in strongly correlated materials such as transition metal oxides or organic conductors. Due to the strong interaction, the charge is localized on different sites leading to a… …   Wikipedia

  • Number Six (The Prisoner) — Number Six is the central fictional character in the 1960s television series The Prisoner, played by Patrick McGoohan. In the AMC remake, the character is played by Jim Caviezel, renamed Six . In several episodes, his attempts to escape his… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”