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 …

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.

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.

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 …

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

3 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 (−); …

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

Ions are atoms that have a positive or negative charge because they have unequal numbers of protons and electrons. If atoms lose electrons, they become positive ions, or cations. If atoms …

An ion is an atom or a molecule that has a net electrical charge because its total number of electrons is not equal to its total number of protons. An ion is formed when a neutral atom …

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 …