
ION
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Ion - Wikipedia
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 …
Ion | Definition, Chemistry, Examples, & Facts | Britannica
6 days ago · 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.
ION Definition & Meaning - Merriam-Webster
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.
What Is an Ion? Definition and Examples - ThoughtCo
Sep 4, 2019 · Learn the definition of an ion, as used in chemistry, chemical engineering, and physics, plus review examples of ions.
Ion - Definition and Examples - Biology Online Dictionary
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 number of …
1.13: Ions: Atoms That Have Lost or Gained Electrons
An ion is a chemical species with an overall positive (+) or negative (-) electrical charge. In a neutral atom (one with no net charge), the number of protons is equal to the number of electrons. Ions, by …
What Is an Ion? Chemistry Definition - Science Notes and Projects
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.
Ions: MedlinePlus Medical Encyclopedia
Jul 8, 2025 · An ion is an atom or group of atoms that has an electric charge. Ions with a positive charge are called cations. Ions with a negative charge are called anions.
Definition of ion - Chemistry Dictionary
What is an Ion? 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. Negatively charged ions are …