monatomic
Americanadjective
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having one atom in the molecule.
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containing one replaceable atom or group.
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having a valence of one.
adjective
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(of an element) having or consisting of single atoms
argon is a monatomic gas
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(of a compound or molecule) having only one atom or group that can be replaced in a chemical reaction
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a less common word for monovalent
Other Word Forms
Etymology
Origin of monatomic
Vocabulary lists containing monatomic
Example Sentences
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All monatomic nonmetal ions are anions; examples include the chloride ion, Cl−, the nitride ion, N3−, and the selenide ion, Se2−.
From Textbooks ● Feb. 14, 2019
The ions that we have discussed so far are called monatomic ions, that is, they are ions formed from only one atom.
From Textbooks ● Feb. 14, 2019
Read the labels of several commercial products and identify monatomic ions of at least six main group elements contained in the products.
From Textbooks ● Feb. 14, 2019
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction.
From Textbooks ● Feb. 14, 2019
The supporters of the formula Hg2Cl2 pointed out that dissociation into mercury and mercuric chloride would give this value, since mercury is a monatomic element.
From Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 1 "Calhoun" to "Camoens" by Various
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
