Helium

atomic # 2
atomic mass 4.0

Lithium
atomic # 3

atomic mass 6.9

Beryllium

atomic # 4

atomic mass 9.0

Boron

atomic # 5

atomic mass 10.8

Carbon

atomic # 6

atomic mass 12.0 

Nitrogen

atomic # 7

atomic mass 14.0

Oxygen

atomic # 8

atomic mass 16.0

Fluorine

atomic # 9

atomic mass 19.0

Neon

atomic # 10

atomic mass 20.2

Sodium

atomic # 11

atomic mass 23.0

Magnesium

atomic # 12

atomic mass 24.3

Aluminum

atomic # 13

atomic mass 27.0

Silicon

atomic # 14

atomic mass 28.1

Phosphorus

atomic # 15

atomic mass 31.0

Sulfur

atomic # 16

atomic mass 32.1

Chlorine

atomic # 17

atomic mass 35.5

Argon

atomic # 18

atomic mass 39.9

Potassium

atomic # 19

atomic mass 39.1 

Calcium

atomic # 20

atomic mass 40.1

Sc

atomic # 21

atomic mass 45.0

Titanium

atomic # 22

atomic mass 47.9

Vanadium

atomic # 23

atomic mass 50.9

Chromium

atomic # 24

atomic mass 52.0

Manganese

atomic # 25

atomic mass 54.9

Iron

atomic # 26

atomic mass 55.8

Cobalt

atomic # 27

atomic mass 58.9

Nickel

atomic # 28

atomic mass 58.7 

Copper

atomic # 29

atomic mass 63.5

Zinc

atomic # 30

atomic mass 65.4

Gallium

atomic # 31

atomic mass 69.7 

Germanium

atomic # 4

atomic mass 72.6

Arsenic

atomic # 33

atomic mass 74.9

Selenium

atomic # 34

atomic mass 79.0

Bromine

atomic # 35

atomic mass 79.9

Krypton

atomic # 36

atomic mass 83.8

Rubidium

atomic # 37

atomic mass 85.5 

Strontium

atomic # 38

atomic mass 87.6

Yttrium

atomic # 39

atomic mass 88.9 

Zirconium

atomic # 40

atomic mass 91.2 

Niobium

atomic # 41

atomic mass 92.9 

Molybdenum

atomic # 42

atomic mass 95.9

Technetium

atomic # 43

atomic mass 97.9

Ruthenium

atomic # 44

atomic mass 101.1

Rhodium

atomic # 45

atomic mass 102.9

Palladium

atomic # 46

atomic mass 106.4 

Silver

atomic # 47

atomic mass 107.9 

Cadmium

atomic # 48

atomic mass 112.4

Indium

atomic # 49

atomic mass 114.8

Tin

atomic # 50

atomic mass 118.7

Antimony

atomic # 51

atomic mass 121.8 

Tellurium

atomic # 52

atomic mass 127.6 

Iodine

atomic # 53

atomic mass 126.9 

Xenon

atomic # 54

atomic mass 131.3 

Cesium

atomic # 55

atomic mass 132.9

Barium

atomic # 56

atomic mass 137.3

Lutetium

atomic # 71

atomic mass 175.0

Hafnium

atomic # 72

atomic mass 178.5

Tantaium

atomic # 73

atomic mass 181.0 

Tungsten

atomic # 74

atomic mass 183.9

Rhenium

atomic # 74

atomic mass 186.2 

Osmium

atomic # 76

atomic mass 190.2 

Iridium

atomic # 77

atomic mass 192.2 

Platinum

atomic # 78

atomic mass 195.1

Gold

atomic # 79

atomic mass 197.0

Mercury

atomic # 80

atomic mass 200.6

Thallium

atomic # 81

atomic mass 204.4 

Lead

atomic # 82

atomic mass 207.2

Bismuth

atomic # 83

atomic mass 209.0 

Polonium

atomic # 84

atomic mass (209)

Astatine

atomic # 85

atomic mass (210)

Radon

atomic # 86

atomic mass (222)