Periodic Table Of The Elements: 1-20
Aluminum
Symbol: Al Atomic Mass: 26.98 Atomic Number: 13
Argon
Symbol: Ar Atomic Mass: 39.95 Atomic Number: 18
Boron
Symbol: B Atomic Mass: 10.81 Atomic Number: 5
Beryllium
Symbol: Be Atomic Mass: 9.01 Atomic Number: 4
Carbon
Symbol: C Atomic Mass: 12.01 Atomic Number: 6
Calcium
Symbol: Ca Atomic Mass: 40.08 Atomic Number: 20
Chlorine
Symbol: Cl Atomic Mass: 35.45 Atomic Number: 17
Fluorine
Symbol: F Atomic Mass: 19.00 Atomic Number: 9
Hydrogen
Symbol: H Atomic Mass: 1.01 Atomic Number: 1
Helium
Symbol: He Atomic Mass: 4.00 Atomic Number: 2
Potassium
Symbol: K Atomic Mass: 39.10 Atomic Number: 19
Lithium
Symbol: Li Atomic Mass: 3 Atomic Number: 6.94
Magnesium
Symbol: Mg Atomic Mass: 24.31 Atomic Number: 12
Nitrogen
Symbol: N Atomic Mass: 14.01 Atomic Number: 7
Sodium
Symbol: Na Atomic Mass: 22.99 Atomic Number: 11
Neon
Symbol: Ne Atomic Mass: 20.18 Atomic Number: 10
Oxygen
Symbol: O Atomic Mass: 16.00 Atomic Number: 8
Phosphorus
Symbol: P Atomic Mass: 30.97 Atomic Number: 15
Sulfur
Symbol: S Atomic Mass: 32.07 Atomic Number: 16
Silicon
Symbol: Si Atomic Mass: 28.09 Atomic Number: 14