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How do atoms become ions?

ChemistryAtomic Structure

Quick Answer

Atoms become ions when they gain or lose electrons. Losing electrons makes a positive ion, while gaining electrons makes a negative ion.

The Full Story

An atom is neutral when it has the same number of protons and electrons. If it loses one or more electrons, it becomes a positively charged cation; if it gains electrons, it becomes a negatively charged anion. This change is central to reactions such as salt formation and electrical conduction in solutions. Sodium, for example, commonly forms Na+ while chlorine often forms Cl−.

Key Facts

1.Ions are charged atoms or molecules
2.Na+ and Cl− are the ions in table salt
3.Electron gain or loss changes charge, not the nucleus

YouTube Angle

Suggested video title for this topic:

"The tiny electron swap that changes everything"