Elements 1-20 2
Terms
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- Atomic Number: 1
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Hydrogen
H - Atomic Number: 2
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Helium
He - Atomic Number: 3
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Lithium
Li - Atomic Number: 4
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Beryliium
Be - Atomic Number: 5
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Boron
B - Atomic Number: 6
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Carbon
C - Atomic Number: 7
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Nitrogen
N - Atomic Number: 8
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Oxygen
O - Atomic Number: 9
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Fluorine
F - Atomic Number: 10
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Neon
Ne - Atomic Number: 11
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Sodium
Na - Atomic Number: 12
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Magnesium
Mg - Atomic Number: 13
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Aluminum
Al - Atomic Number: 14
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Sillicon
Si - Atomic Number: 15
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Phosphorus
P - Atomic Number: 16
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Sulfur
S - Atomic Number: 17
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Chlorine
Cl - Atomic Number: 18
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Argon
Ar - Atomic Number: 19
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Potassium
K - Atomic Number: 20
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Calcium
Ca