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Isotone
From Wikipedia, the free encyclopedia
- This article is about a chemistry concept. 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.
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 for the meaning as on a weather chart.
- 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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