First 20 Elements

H
Hydrogen
He
Helium
Li
Lithium
Be
Beryllium
B
Boron
C
Carbon
N
Nitrogen
O
Oxygen
F
Fluorine
Ne
Neon
Na
Sodium
Mg
Magnesium
Al
Aluminum
Si
Silicon
P
Phosphorus
S
Sulfur
Cl
Chlorine
Ar
Argon
K
Potassium
Ca
Calcium
Hydrogen
H
Helium
He
Lithium
Li
Beryllium
Be
Boron
B
Carbon
C
Nitrogen
N
Oxygen
O
Fluorine
F
Neon
Ne
Sodium
Na
Magnesium
Mg
Aluminum
Al
Silicon
Si
Phosphorus
P
Sulfur
S
Chlorine
Cl
Argon
Ar
Potassium
K
Calcium
Ca
Atomic Number is 1
Hydrogen
Atomic Number is 2
Helium
Atomic Number is 3
Lithium
Atomic Number is 4
Beryllium
Atomic Number is 5
Boron
Atomic Number is 6
Carbon
Atomic Number is 7
Nitrogen
Atomic Number is 8
Oxygen
Atomic Number is 9
Fluorine
Atomic Number is 10
Neon
Atomic Number is 11
Sodium
Atomic Number is 12
Magnesium
Atomic Number is 13
Aluminum
Atomic Number is 14
Silicon
Atomic Number is 15
Phosphorus
Atomic Number is 16
Sulfur
Atomic Number is 17
Chlorine
Atomic Number is 18
Argon
Atomic Number is 19
Potassium
Atomic Number is 20
Calcium
Atomic Mass is 1.01
Hydrogen
Atomic Mass is 4.00
Helium
Aomic Mass is 6.94
Lithium
Aomic Mass is 9.01
Beryllium
Atomic Mass is 10.81
Boron
Atomic Mass is 12.01
Carbon
Atomic Mass is 14.01
Nitrogen
Atomic Mass is 15.99
Oxygen
Atomic Mass is 18.99
Fluorine
Atomic Mass is 200.18
Neon
Atomic Mass is 22.99
Sodium
Atomic Mass is 24.31
Magnesium
Atomic Mass is 26.98
Aluminum
Atomic Mass is 28.09
Silicon
Atomic Mass is 30.97
Phosphorus
Atomic Mass is 32.07
Sulfur
Atomic Mass is 35.45
Chlorine
Atomic Mass is 39.95
Argon
Atomic Mass is 39.10
Potassium
Atomic Mass is 40.08
Calcium
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