Isotones
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
Isotones
atoms of different chemical elements with the same number of neutrons in their nuclei. The following are examples of isotones: the atoms and , whose nuclei contain three neutrons each. Among these isotones, 5He decays almost instantaneously, 6Li is stable, and 7Be and 8B are radioactive—they have half-lives of 43 days and 0.8 sec, respectively.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.