Examples from the Web for monatomic
If this should prove to be the case, it will favour the view that chlorine itself is molecular and not monatomic.Fragments of science, V. 1-2|John Tyndall
The cadmium molecule, as shown by determinations of the density of its vapour, is monatomic.
All of them are believed to be monatomic—that is to say, each of their molecules is composed of a single atom.A History of Science, Volume 5(of 5)|Henry Smith Williams
This information does not inform, since there is a vast number of monatomic alcohols and of every description.
Its ratio of specific heats has very nearly the ideal value 1.666, appropriate to a monatomic molecule.