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Element #1
H - Hydrogen
Element #2
He - Helium
Element #3
Li - Lithium
Element #4
Be - Beryllium
Element #5
B - Boron
Element #6
C - Carbon
Element #7
N - Nitrogen
Element #8
O - Oxygen
Element #9
F - Fluorine
Element #10
Ne - Neon
Element #11
Na - Sodium
Element #12
Mg - Magnesium
Element #13
Al - Aluminium
Element #14
Si - Silicon
Element #15
P - Phosphorous
Element #16
S - Sulphur
Element #17
Cl - Chlorine
Element #18
Ar - Argon
Element #19
K - Potassium
Element #20
Ca - Calcium