An ion is formed when the parent atom will either loose or gain an electron/s. An ion will always have a full outer shell
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What is the name for a: a) positive ion b) negative ion/
a) a cation b) an anion
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What is the markscheme definition of an ion?
An ion has the same number of protons but a different number of electron, it will have either a positive or negative charge
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When are positive ions formed?
When a metal atom (group 1-3) loose the electrons in their outer shell
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What groups form negative ions?
Groups 5,6 and 7 and will gain electrons until the have a complete outer shell
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How are ionic bonds formed?
Ionic bonds form between metals and non-metals. Metal ions lose electrons to form cations. Non-metals gain electrons to form anions. The oppositely charged ions attract one another- called Electrostatic attraction
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What is the name for a: a) positive ion b) negative ion/
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