valence electrons elements 1-20

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20 Terms

1
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Hydrogen

1 valence electron

2
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Helium

2 valence electrons

3
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lithium

1 valence electrons

4
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beryllium

2 valence electrons

5
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boron

3 valence electrons

6
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carbon

4 valence electrons

7
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nitrogen

5 valence electrons

8
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oxygen

6 valence electrons

9
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flourine

7 valence electrons

10
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neon

8 valence electrons

11
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sodium

1 valence electron

12
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magnesium

2 valence electrons

13
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aluminum

3 valence electrons

14
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silicon

4 valence electrons

15
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phosphorus

5 valence electrons

16
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sulfur

6 valence electrons

17
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chlorine

7 valence electrons

18
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argon

8 valence electrons

19
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potassium

1 valence electron

20
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calcium

2 valence eletrons