📖 what
What is an ion?
ChemistryParticles
Quick Answer
An ion is an atom or molecule that has gained or lost electrons and therefore carries a charge. Positive ions are cations, and negative ions are anions.
The Full Story
Ions form when the number of electrons no longer matches the number of protons. Metals often lose electrons to become cations, while nonmetals often gain electrons to become anions. Sodium becomes Na+ when it loses one electron, and chlorine becomes Cl- when it gains one. Ion formation is essential in salts, batteries, nerve signaling, and electrochemistry. Because charged particles respond to electric fields, ions are central to many natural and technological processes.
Key Facts
1.Na+ is a common cation
2.Cl- is a common anion
3.Ions are crucial in batteries and nerve impulses
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"How atoms become charged and power everyday life"