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 …

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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.

Nov 20, 2021 · In chemistry, the definition of an ion is an electrically charged atom or molecule. This means the atom or molecule has an unequal number of protons and electrons.

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.

Sep 4, 2019 · Learn the definition of an ion, as used in chemistry, chemical engineering, and physics, plus review examples of ions.

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

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 …

Jul 12, 2023 · An ion is an atom that has an electric charge because it’s either lost or gained one or more of its electrons. In chemistry, positively-charged ions are called cations and negatively …

May 21, 2024 · An ion is an atom or molecule with more or less electrons than usual, giving it a positive or negative electric charge. Because an ion "wants" to become neutral by acquiring or …