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 charge of a …

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.

Positive ions, or cations, are formed by the loss of electrons; negative ions, or anions, are formed by the gain of electrons. An atom that has either lost or gained one or more electrons, so that it has an …

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.

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

4 days ago · ion (plural ions) An atom or group of atoms bearing an electrical charge, such as the sodium and chlorine atoms in a salt solution. hyponyms Hyponyms: (cardinal types) anion (−); cation …

Read this tutorial to learn about what an ion is, the differently charged ions, and how they are involved in different branches of chemistry!

An ion is an electrically charged atom or molecule (group of atoms). It is "charged" so it will move near electricity. Atoms are made from positively charged protons, negatively charged electrons, and …

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

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