What is Ion? Definition, Meaning & Example
An atom or molecule with an electric charge due to gain or loss of electrons.
TL;DR: An atom or molecule with an electric charge due to gain or loss of electrons.
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Ion: An atom or molecule with an electric charge due to gain or loss of electrons.
Explanation
Ions are charged particles formed when atoms gain or lose electrons. Cations are positively charged ions (lost electrons) and anions are negatively charged ions (gained electrons). Many compounds consist of ions held together by ionic bonds. Salts dissolve in water to form ions. Ions are important in biological systems for nerve transmission and muscle contraction.
Example
Sodium chloride (table salt) consists of sodium cations (Na+) and chloride anions (Cl-) held together by ionic bonds.
Frequently Asked Questions
What is the difference between a cation and an anion?
A cation is a positively charged ion that has lost electrons, while an anion is negatively charged and has gained electrons.
How are ions formed?
Ions form when atoms gain or lose electrons, creating an imbalance between protons and electrons.
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