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20 terms

2O ELEMENTS

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Ar
Argon
H
Hydrogen
S
Sulfur
C
Carbon
Ca
Calcium
P
Phosphorus
He
Helium
K
Potassium
Ne
Neon
Cl
Chlorine
Si
Silicone
B
Boron
F
Fluorine
O
Oxygen
Al
Alluminum
Mg
Magnesium
Li
Lithium
Na
Sodium
N
Nitrogen
Be
Beryllium