Element Properties

Atomic #: 1

Mass: 1.008 u

Category: Nonmetal

State: Gas

Electronegativity: 2.2

Valence e⁻: 1

Atomic #: 2

Mass: 4.003 u

Category: Noble Gas

State: Gas

Valence e⁻: 2

Atomic #: 3

Mass: 6.941 u

Category: Alkali Metal

State: Solid

Electronegativity: 0.98

Valence e⁻: 1

Atomic #: 4

Mass: 9.012 u

Category: Alkaline Earth Metal

State: Solid

Electronegativity: 1.57

Valence e⁻: 2

Atomic #: 5

Mass: 10.811 u

Category: Metalloid

State: Solid

Electronegativity: 2.04

Valence e⁻: 3

Atomic #: 6

Mass: 12.011 u

Category: Nonmetal

State: Solid

Electronegativity: 2.55

Valence e⁻: 4

Atomic #: 7

Mass: 14.007 u

Category: Nonmetal

State: Gas

Electronegativity: 3.04

Valence e⁻: 5

Atomic #: 8

Mass: 15.999 u

Category: Nonmetal

State: Gas

Electronegativity: 3.44

Valence e⁻: 6

Atomic #: 9

Mass: 18.998 u

Category: Halogen

State: Gas

Electronegativity: 3.98

Valence e⁻: 7

Atomic #: 10

Mass: 20.18 u

Category: Noble Gas

State: Gas

Valence e⁻: 8

Atomic #: 11

Mass: 22.99 u

Category: Alkali Metal

State: Solid

Electronegativity: 0.93

Valence e⁻: 1

Atomic #: 12

Mass: 24.305 u

Category: Alkaline Earth Metal

State: Solid

Electronegativity: 1.31

Valence e⁻: 2

Atomic #: 13

Mass: 26.982 u

Category: Post-Transition Metal

State: Solid

Electronegativity: 1.61

Valence e⁻: 3

Atomic #: 14

Mass: 28.085 u

Category: Metalloid

State: Solid

Electronegativity: 1.9

Valence e⁻: 4

Atomic #: 15

Mass: 30.974 u

Category: Nonmetal

State: Solid

Electronegativity: 2.19

Valence e⁻: 5

Atomic #: 16

Mass: 32.06 u

Category: Nonmetal

State: Solid

Electronegativity: 2.58

Valence e⁻: 6

Atomic #: 17

Mass: 35.45 u

Category: Halogen

State: Gas

Electronegativity: 3.16

Valence e⁻: 7

Atomic #: 18

Mass: 39.948 u

Category: Noble Gas

State: Gas

Valence e⁻: 8

Atomic #: 19

Mass: 39.098 u

Category: Alkali Metal

State: Solid

Electronegativity: 0.82

Valence e⁻: 1

Atomic #: 20

Mass: 40.078 u

Category: Alkaline Earth Metal

State: Solid

Electronegativity: 1

Valence e⁻: 2

Atomic #: 21

Mass: 44.956 u

Category: Transition Metal

State: Solid

Electronegativity: 1.36

Valence e⁻: 2

Atomic #: 22

Mass: 47.867 u

Category: Transition Metal

State: Solid

Electronegativity: 1.54

Valence e⁻: 2

Atomic #: 23

Mass: 50.942 u

Category: Transition Metal

State: Solid

Electronegativity: 1.63

Valence e⁻: 2

Atomic #: 24

Mass: 51.996 u

Category: Transition Metal

State: Solid

Electronegativity: 1.66

Valence e⁻: 1

Atomic #: 25

Mass: 54.938 u

Category: Transition Metal

State: Solid

Electronegativity: 1.55

Valence e⁻: 2

Atomic #: 26

Mass: 55.845 u

Category: Transition Metal

State: Solid

Electronegativity: 1.83

Valence e⁻: 2

Atomic #: 27

Mass: 58.933 u

Category: Transition Metal

State: Solid

Electronegativity: 1.88

Valence e⁻: 2

Atomic #: 28

Mass: 58.693 u

Category: Transition Metal

State: Solid

Electronegativity: 1.91

Valence e⁻: 2

Atomic #: 29

Mass: 63.546 u

Category: Transition Metal

State: Solid

Electronegativity: 1.9

Valence e⁻: 1

Atomic #: 30

Mass: 65.38 u

Category: Transition Metal

State: Solid

Electronegativity: 1.65

Valence e⁻: 2

Atomic #: 31

Mass: 69.723 u

Category: Post-Transition Metal

State: Solid

Electronegativity: 1.81

Valence e⁻: 3

Atomic #: 32

Mass: 72.63 u

Category: Metalloid

State: Solid

Electronegativity: 2.01

Valence e⁻: 4

Atomic #: 33

Mass: 74.922 u

Category: Metalloid

State: Solid

Electronegativity: 2.18

Valence e⁻: 5

Atomic #: 34

Mass: 78.971 u

Category: Nonmetal

State: Solid

Electronegativity: 2.55

Valence e⁻: 6

Atomic #: 35

Mass: 79.904 u

Category: Halogen

State: Liquid

Electronegativity: 2.96

Valence e⁻: 7

Atomic #: 36

Mass: 83.798 u

Category: Noble Gas

State: Gas

Electronegativity: 3

Valence e⁻: 8

Atomic #: 37

Mass: 85.468 u

Category: Alkali Metal

State: Solid

Electronegativity: 0.82

Valence e⁻: 1

Atomic #: 38

Mass: 87.62 u

Category: Alkaline Earth Metal

State: Solid

Electronegativity: 0.95

Valence e⁻: 2

Atomic #: 39

Mass: 88.906 u

Category: Transition Metal

State: Solid

Electronegativity: 1.22

Valence e⁻: 2

Atomic #: 40

Mass: 91.224 u

Category: Transition Metal

State: Solid

Electronegativity: 1.33

Valence e⁻: 2

Atomic #: 41

Mass: 92.906 u

Category: Transition Metal

State: Solid

Electronegativity: 1.6

Valence e⁻: 1

Atomic #: 42

Mass: 95.95 u

Category: Transition Metal

State: Solid

Electronegativity: 2.16

Valence e⁻: 1

Atomic #: 43

Mass: 98 u

Category: Transition Metal

State: Solid

Electronegativity: 1.9

Valence e⁻: 2

Atomic #: 44

Mass: 101.07 u

Category: Transition Metal

State: Solid

Electronegativity: 2.2

Valence e⁻: 1

Atomic #: 45

Mass: 102.91 u

Category: Transition Metal

State: Solid

Electronegativity: 2.28

Valence e⁻: 1

Atomic #: 46

Mass: 106.42 u

Category: Transition Metal

State: Solid

Electronegativity: 2.2

Valence e⁻: 0

Atomic #: 47

Mass: 107.87 u

Category: Transition Metal

State: Solid

Electronegativity: 1.93

Valence e⁻: 1

Atomic #: 48

Mass: 112.41 u

Category: Transition Metal

State: Solid

Electronegativity: 1.69

Valence e⁻: 2

Atomic #: 49

Mass: 114.82 u

Category: Post-Transition Metal

State: Solid

Electronegativity: 1.78

Valence e⁻: 3

Atomic #: 50

Mass: 118.71 u

Category: Post-Transition Metal

State: Solid

Electronegativity: 1.96

Valence e⁻: 4

Atomic #: 51

Mass: 121.76 u

Category: Metalloid

State: Solid

Electronegativity: 2.05

Valence e⁻: 5

Atomic #: 52

Mass: 127.6 u

Category: Metalloid

State: Solid

Electronegativity: 2.1

Valence e⁻: 6

Atomic #: 53

Mass: 126.9 u

Category: Halogen

State: Solid

Electronegativity: 2.66

Valence e⁻: 7

Atomic #: 54

Mass: 131.29 u

Category: Noble Gas

State: Gas

Electronegativity: 2.6

Valence e⁻: 8

Atomic #: 55

Mass: 132.91 u

Category: Alkali Metal

State: Solid

Electronegativity: 0.79

Valence e⁻: 1

Atomic #: 56

Mass: 137.33 u

Category: Alkaline Earth Metal

State: Solid

Electronegativity: 0.89

Valence e⁻: 2

Atomic #: 57

Mass: 138.91 u

Category: Lanthanide

State: Solid

Electronegativity: 1.1

Valence e⁻: 2

Atomic #: 58

Mass: 140.12 u

Category: Lanthanide

State: Solid

Electronegativity: 1.12

Valence e⁻: 2

Atomic #: 59

Mass: 140.91 u

Category: Lanthanide

State: Solid

Electronegativity: 1.13

Valence e⁻: 2

Atomic #: 60

Mass: 144.24 u

Category: Lanthanide

State: Solid

Electronegativity: 1.14

Valence e⁻: 2

Atomic #: 61

Mass: 145 u

Category: Lanthanide

State: Solid

Electronegativity: 1.13

Valence e⁻: 2

Atomic #: 62

Mass: 150.36 u

Category: Lanthanide

State: Solid

Electronegativity: 1.17

Valence e⁻: 2

Atomic #: 63

Mass: 151.96 u

Category: Lanthanide

State: Solid

Electronegativity: 1.2

Valence e⁻: 2

Atomic #: 64

Mass: 157.25 u

Category: Lanthanide

State: Solid

Electronegativity: 1.2

Valence e⁻: 2

Atomic #: 65

Mass: 158.93 u

Category: Lanthanide

State: Solid

Electronegativity: 1.2

Valence e⁻: 2

Atomic #: 66

Mass: 162.5 u

Category: Lanthanide

State: Solid

Electronegativity: 1.22

Valence e⁻: 2

Atomic #: 67

Mass: 164.93 u

Category: Lanthanide

State: Solid

Electronegativity: 1.23

Valence e⁻: 2

Atomic #: 68

Mass: 167.26 u

Category: Lanthanide

State: Solid

Electronegativity: 1.24

Valence e⁻: 2

Atomic #: 69

Mass: 168.93 u

Category: Lanthanide

State: Solid

Electronegativity: 1.25

Valence e⁻: 2

Atomic #: 70

Mass: 173.05 u

Category: Lanthanide

State: Solid

Electronegativity: 1.1

Valence e⁻: 2

Atomic #: 71

Mass: 174.97 u

Category: Lanthanide

State: Solid

Electronegativity: 1.27

Valence e⁻: 2

Atomic #: 72

Mass: 178.49 u

Category: Transition Metal

State: Solid

Electronegativity: 1.3

Valence e⁻: 2

Atomic #: 73

Mass: 180.95 u

Category: Transition Metal

State: Solid

Electronegativity: 1.5

Valence e⁻: 2

Atomic #: 74

Mass: 183.84 u

Category: Transition Metal

State: Solid

Electronegativity: 2.36

Valence e⁻: 2

Atomic #: 75

Mass: 186.21 u

Category: Transition Metal

State: Solid

Electronegativity: 1.9

Valence e⁻: 2

Atomic #: 76

Mass: 190.23 u

Category: Transition Metal

State: Solid

Electronegativity: 2.2

Valence e⁻: 2

Atomic #: 77

Mass: 192.22 u

Category: Transition Metal

State: Solid

Electronegativity: 2.2

Valence e⁻: 2

Atomic #: 78

Mass: 195.08 u

Category: Transition Metal

State: Solid

Electronegativity: 2.28

Valence e⁻: 1

Atomic #: 79

Mass: 196.97 u

Category: Transition Metal

State: Solid

Electronegativity: 2.54

Valence e⁻: 1

Atomic #: 80

Mass: 200.59 u

Category: Transition Metal

State: Liquid

Electronegativity: 2

Valence e⁻: 2

Atomic #: 81

Mass: 204.38 u

Category: Post-Transition Metal

State: Solid

Electronegativity: 1.62

Valence e⁻: 3

Atomic #: 82

Mass: 207.2 u

Category: Post-Transition Metal

State: Solid

Electronegativity: 2.33

Valence e⁻: 4

Atomic #: 83

Mass: 208.98 u

Category: Post-Transition Metal

State: Solid

Electronegativity: 2.02

Valence e⁻: 5

Atomic #: 84

Mass: 209 u

Category: Metalloid

State: Solid

Electronegativity: 2

Valence e⁻: 6

Atomic #: 85

Mass: 210 u

Category: Halogen

State: Solid

Electronegativity: 2.2

Valence e⁻: 7

Atomic #: 86

Mass: 222 u

Category: Noble Gas

State: Gas

Electronegativity: 2.2

Valence e⁻: 8

Atomic #: 87

Mass: 223 u

Category: Alkali Metal

State: Solid

Electronegativity: 0.7

Valence e⁻: 1

Atomic #: 88

Mass: 226 u

Category: Alkaline Earth Metal

State: Solid

Electronegativity: 0.9

Valence e⁻: 2

Atomic #: 89

Mass: 227 u

Category: Actinide

State: Solid

Electronegativity: 1.1

Valence e⁻: 2

Atomic #: 90

Mass: 232.04 u

Category: Actinide

State: Solid

Electronegativity: 1.3

Valence e⁻: 2

Atomic #: 91

Mass: 231.04 u

Category: Actinide

State: Solid

Electronegativity: 1.5

Valence e⁻: 2

Atomic #: 92

Mass: 238.03 u

Category: Actinide

State: Solid

Electronegativity: 1.38

Valence e⁻: 2

Atomic #: 93

Mass: 237 u

Category: Actinide

State: Solid

Electronegativity: 1.36

Valence e⁻: 2

Atomic #: 94

Mass: 244 u

Category: Actinide

State: Solid

Electronegativity: 1.28

Valence e⁻: 2

Atomic #: 95

Mass: 243 u

Category: Actinide

State: Solid

Electronegativity: 1.13

Valence e⁻: 2

Atomic #: 96

Mass: 247 u

Category: Actinide

State: Solid

Electronegativity: 1.28

Valence e⁻: 2

Atomic #: 97

Mass: 247 u

Category: Actinide

State: Solid

Electronegativity: 1.3

Valence e⁻: 2