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first 20 elements

QuestionAnswer
Hydrogen 1
Helium 2
Lithium 3
Berylium 4
Boron 5
Carbon 6
Nitrogen 7
Oxygen 8
Flourine 9
Neon 10
Sodium 11
Magnesium 12
Aluminum 13
Silicon 14
Phosphorus 15
Sulfur 16
Chlorine 17
Argon 18
Potassium 19
Calcium 20
Created by: RUI1476-1