In physics and chemistry, "monatomic" is a combination of the words "mono" and "atomic", and means "single atom ". It is usually applied to gases: a monatomic gas is a gas in which atoms …

Monatomic gas, gas composed of particles (molecules) that consist of single atoms, such as helium or sodium vapour, and in this way different from diatomic, triatomic, or, in general, …

Jun 9, 2025 · Learn what monatomic elements are, get examples of them, and understand why an atom might exist in monoatomic form.

The meaning of MONATOMIC is consisting of one atom; especially : having but one atom in the molecule.

Add to word list chemistry having only one atom or group of atoms that can be replaced in a chemical reaction (Definition of monatomic from the Cambridge Academic Content Dictionary …

Monatomic is a chemical term describing a substance whose molecules consist of only a single atom. The word combines the Greek prefix “mono-” (meaning one) and “atomic” (referring to …

Monatomic refers to a substance that exists as individual, isolated atoms rather than molecules. This term is particularly relevant in the context of the noble gases, which are composed of …

Jul 13, 2021 · A monatomic ion is an ion with only one atom. A monatomic ion is an ion made of exactly one atom. In other words, it is an atom that has an unequal number of protons and …

These multi-atom combinations are called molecules. A molecule is the smallest part of a substance that has the physical and chemical properties of that substance. In some respects, …

A monatomic gas is a gas composed of individual atoms that are not chemically bonded to each other. The term 'monatomic' comes from 'mono' (meaning one) and 'atomic' (meaning atom).