Definition, Meaning & Synonyms
ion
Noun
/ˈaɪ.ɒn/
Definition
An ion is an atom or molecule that has a net electric charge due to the loss or gain of one or more electrons.
Examples
- The sodium ion (Na+) is essential for nerve function.
- A chloride ion (Cl–) is commonly found in table salt.
- In batteries, lithium ions move between the anode and cathode during discharge.
Meaning
Ions are particles that can be positive (cations) or negative (anions) based on their charge.
Synonyms
- charged particle
- cation (for positive ions)
- anion (for negative ions)