Chemistry periodic table

Hydrogen

Atomic mass 1, Ar 1

Helium

Atomic mass 2, Ar 4

Lithium

Atomic (proton) number 3, relative atomic mass 7

Beryllium

Atomic number 4, relative atomic mass 9

Boron

Atomic number 5, relative atomic mass 11

Carbon

Atomic mass 6, Ar 12

Nitrogen

Atomic mass 7, Ar 14

Oxygen

Atomic mass 8, Ar 16

Flurorine

Atomic mass 9, Ar 19

Neon

Atomic mass 10, Ar 20

Sodium

Atomic mass 11, Ar 23

Magnesium

Atomic mass 12, Ar 24

Aluminium

Atomic mass 13, Ar 27

Silicon

Atomic mass 14, Ar 28

Phosphorus

Atomic mass 15, Ar 31

Sulfur

Atomic mass 16, Ar 32

Chlroine

Atomic mass 17, Ar 35.5

Argon

Atomic mass 18, Ar 40

Potassium

Atomic mass 19, Ar 39

Calcium

Atomic mass 20, Ar 40