2.1 - formation of ions

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7 Terms

1
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what is an ion?

a charged atom

2
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how do atoms become ions?

by gaining or losing electrons

3
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what type of ions do metals form?

positive

4
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what type of ions do non metals form?

negative

5
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what ions do group 2 elements from?

+2

6
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what ions do group 7 elements form?

-1

7
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what ions do group 6 elements form?

-2