First 20 Elements, Atomic Number And Mass.

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Set Of Flashcards For Chemical Elements.

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Hydrogen
 
1    H 1
Helium
 
4   He 2
Lithium
 
7   Li 3
Beryllium
 
9    Be 4
Boron
 
11     B  5
Carbon
 
12    C 6
Nitrogen
 
14     N 7
Oxygen
 
16   O 8
Fluorine
 
19   F 9
Neon
 
20 Ne 10
Sodium
 
23 Na 11
Magnesium
 
24   Mg 12
Aluminium
 
27  Al 13
Silicon
 
28  Si 14
Phosphorus
 
31   P 15
Sulphur
 
32   S 16
Chlorine
 
35.5  Cl
Argon
 
40   Ar 18
Potassium
 
39 K 19
Calcium
 
40 Ca 20