Isotone

Isotone

:"This article is about a concept in nuclear physics. For biochemistry see isotonic. For the mathematical meaning, see monotone."

Two nuclides are isotones if they have the same number "N" of neutrons. For example, Boron-12 and Carbon-13 both have 7 Neutrons; S-36, Cl-37, Ar-38, K-39, Ca-40, these nuclei contain 20 neutrons each etc.

This is to be contrasted with
* Isotopes are nuclides having the same number of protons (Carbon-12 and Carbon-13)
* Isobars are nuclides having the same mass number; i.e. sum of protons plus neutrons; Carbon-12 and Boron-12. See "Isobar (Contour line)" for the meaning in the context of weather charts.
* Nuclear isomers are different excited states of the same type of nucleus. A transition from one isomer to another is accompanied by emission or absorption of a gamma ray, or the process of internal conversion. (Not to be confused with chemical isomers.)

The word "isotone" looks like Greek for "same stretching", but it actually is "isotope" with "p" for "proton" replaced by "n" for "neutron".


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  • isotone — ● isotone adjectif (grec isotonos) Se dit des stimuli de couleurs qui ont même longueur d onde dominante. Se dit des nucléides qui possèdent le même nombre de neutrons, mais un nombre différent de protons. isotone [izoton; izɔtɔn] adj. ÉTYM. 1934 …   Encyclopédie Universelle

  • isotone — [ī′sə tōn΄] n. [ ISO + TONE] any atom with the same number of neutrons as another atom but a different atomic number …   English World dictionary

  • isotone — izotonas statusas T sritis fizika atitikmenys: angl. isotone vok. Isoton, n rus. изотон, m pranc. isotone, m …   Fizikos terminų žodynas

  • Isotone — Die Nuklide zweier unterschiedlicher chemischer Elemente (damit auch von unterschiedlicher Kernladungszahl) werden Isotone genannt, wenn ihre Atomkerne die gleiche Anzahl von Neutronen haben. Das Wort Isoton ist ein Kunstwort, das von Isotop… …   Deutsch Wikipedia

  • Isotone — Iso|to|ne 〈Pl.〉 Atomkerne, die die gleiche Anzahl von Neutronen bei verschiedener Protonenzahl besitzen * * * Isotone   [zu griechisch tónos »das Spannen«, »Anspannung«], Singular Isoton das, s, Atomkerne mit gleicher Neutronenzahl N, aber… …   Universal-Lexikon

  • isotone Abbildung — isotone Abbildung,   Mathematik: Ordnungshomomorphismus …   Universal-Lexikon

  • Isotone — Sommaire 1 Définition 2 Exemple 3 Voir aussi 4 Ne pas confondre avec Définition Se dit d atomes (ou d éléments) possédant un nombr …   Wikipédia en Français

  • isotone — См. isosyntagme …   Пятиязычный словарь лингвистических терминов

  • isotone — /uy seuh tohn /, n. Physics. one of two or more atoms having an equal number of neutrons but different atomic numbers. [1930 35; ISO + TONE] * * * ▪ chemistry       any of two or more species of atoms or nuclei that have the same number of… …   Universalium

  • isotone — noun either of a number of nuclides of different elements that have the same number of neutrons See Also: isotonic …   Wiktionary

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