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
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
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
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 oxidation number of a monatomic ion is equal to the ion’s charge.
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
The cadmium molecule, as shown by determinations of the density of its vapour, is monatomic.
From Encyclopaedia Britannica, 11th Edition, Volume 4, Part 4 "Bulgaria" to "Calgary" by Various
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