An ion (/ ˈaɪ.ɒn, - ən /) [1] is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to …

The meaning of ION is an atom or group of atoms that carries a positive or negative electric charge as a result of having lost or gained one or more electrons. How to use ion in a sentence.

Nov 18, 2025 · Ion, any atom or group of atoms that bears one or more positive or negative electrical charges. Positively charged ions are called cations; negatively charged ions, anions.

Sep 4, 2019 · Ions can be single atoms or groups of atoms forming monatomic or polyatomic ions. An ion is defined as an atom or molecule that has gained or lost one or more of its valence …

What is an ion? An ion is an atom or molecule with either a positive or negative electrical charge. An ion has a charge because the number of protons does not equal the number of electrons; …

An ion is an atom or molecule that carries an electric charge. Ions are identified by the use of a superscript to show the sign and size of their electric charge.

ION definition: 1. an atom or small group of atoms that has an electrical charge because it has added or lost one…. Learn more.

Apr 1, 2025 · In science, an "ion" is an atom or molecule that has gained or lost electrons, resulting in a net positive or negative charge. This definition is fundamental in understanding …

Sep 2, 2022 · Ion definition chemistry (ion meaning): An ion is a charge-carrying atom or a charge-carrying molecule. An ion’s net charge is never zero since it possesses an unequal …

An ion can be described as a chemical species that hold either a positive or negative charge of some amount of magnitude. The word 'ion' can be used to refer to molecules or atoms that …