Chemistry

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GCSE

Ionic Bonds

Question

What is an Ion?

3 years ago

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Daren Johnson


1 Answer

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An ion is formed when an atom either loses electron(s) from its outer shell or gains electron(s) so that the outer shell has 8 electrons, thus making it stable. Atoms which lose electrons form positive ions and those which gain electrons form negative ions. Metals form positive ions and non-metals form negative ions.

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