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  1. 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 …

  2. Ion | Definition, Chemistry, Examples, & Facts | Britannica

    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.

  3. 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.

  4. What is an ion? - ChemTalk

    If there are more protons in an atom, it becomes a positively charged ion, or a cation. On the other hand, if there are more electrons, it is a negatively charges ion, or an anion. Since opposite …

  5. What Is An Ion In Chemistry? | The Science Blog

    Jul 12, 2023 · What Is An Ion In Chemistry? 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 …

  6. Ions | Definition & Examples | Chemistry | Secondary - Alloprof

    An ion is an electrically charged particle that forms when an atom loses or gains electrons. To determine the charge of an ion, the sum of charges has to be calculated. Simply add up the …

  7. What Is an Ion? Definition, Types, Formation, Properties & Examples

    Learn what ions are, how they form, and the difference between cations and anions. Understand ion properties, ionic compounds, and real-life examples. Simple explanation for students and …

  8. What is an Ion? (with picture) - AllTheScience

    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 …

  9. 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 …

  10. 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 …