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Chemistry  /  Chem 0228  ·  Atom · ~20 seconds

Cation

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A cation is a positively charged ion, formed when an atom or molecule loses one or more electrons.

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A calcium atom that loses two electrons becomes the Ca2+ cation, carrying two more protons than electrons.

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The name refers to the missing electrons, not extra protons — the proton count never changes when an ion forms.