Separation and purification technology

Chemical elements of the periodic table arranged by atomic number

The below periodic table chart lists elements by atomic number including the element symbol, name, and Pauling electronegativity value for quick and simple reference.

Atomic number

Symbol

Element

Electro­negativity

1

H

Hydrogen

2.2

2

He

Helium

 

3

Li

Lithium

0.98

4

Be

Beryllium

1.57

5

B

Boron

2.04

6

C

Carbon

2.55

7

N

Nitrogen

3.04

8

O

Oxygen

3.44

9

F

Fluorine

3.98

10

Ne

Neon

 

11

Na

Sodium

0.93

12

Mg

Magnesium

1.31

13

Al

Aluminium

1.61

14

Si

Silicon

1.9

15

P

Phosphorus

2.19

16

S

Sulfur

2.58

17

Cl

Chlorine

3.16

18

Ar

Argon

 

19

K

Potassium

0.82

20

Ca

Calcium

1

21

Sc

Scandium

1.36

22

Ti

Titanium

1.54

23

V

Vanadium

1.63

24

Cr

Chromium

1.66

25

Mn

Manganese

1.55

26

Fe

Iron

1.83

27

Co

Cobalt

1.88

28

Ni

Nickel

1.91

29

Cu

Copper

1.9

30

Zn

Zinc

1.65

31

Ga

Gallium

1.81

32

Ge

Germanium

2.01

33

As

Arsenic

2.18

34

Se

Selenium

2.55

35

Br

Bromine

2.96

36

Kr

Krypton

3

37

Rb

Rubidium

0.82

38

Sr

Strontium

0.95

39

Y

Yttrium

1.22

40

Zr

Zirconium

1.33

41

Nb

Niobium

1.6

42

Mo

Molybdenum

2.16

43

Tc

Technetium

1.9

44

Ru

Ruthenium

2.2

45

Rh

Rhodium

2.28

46

Pd

Palladium

2.2

47

Ag

Silver

1.93

48

Cd

Cadmium

1.69

49

In

Indium

1.78

50

Sn

Tin

1.96

51

Sb

Antimony

2.05

52

Te

Tellurium

2.1

53

I

Iodine

2.66

54

Xe

Xenon

2.6

55

Cs

Caesium

0.79

56

Ba

Barium

0.89

57

La

Lanthanum

1.1

58

Ce

Cerium

1.12

59

Pr

Praseodymium

1.13

60

Nd

Neodymium

1.14

61

Pm

Promethium

1.13

62

Sm

Samarium

1.17

63

Eu

Europium

1.2

64

Gd

Gadolinium

1.2

65

Tb

Terbium

1.2

66

Dy

Dysprosium

1.22

67

Ho

Holmium

1.23

68

Er

Erbium

1.24

69

Tm

Thulium

1.25

70

Yb

Ytterbium

1.1

71

Lu

Lutetium

1.27

72

Hf

Hafnium

1.3

73

Ta

Tantalum

1.5

74

W

Tungsten

2.36

75

Re

Rhenium

1.9

76

Os

Osmium

2.2

77

Ir

Iridium

2.2

78

Pt

Platinum

2.28

79

Au

Gold

2.54

80

Hg

Mercury

2

81

Tl

Thallium

1.62

82

Pb

Lead

1.87

83

Bi

Bismuth

2.02

84

Po

Polonium

2

85

At

Astatine

2.2

86

Rn

Radon

2.2

87

Fr

Francium

0.7

88

Ra

Radium

0.9

89

Ac

Actinium

1.1

90

Th

Thorium

1.3

91

Pa

Protactinium

1.5

92

U

Uranium

1.38

93

Np

Neptunium

1.36

94

Pu

Plutonium

1.28

95

Am

Americium

1.13

96

Cm

Curium

1.28

97

Bk

Berkelium

1.3

98

Cf

Californium

1.3

99

Es

Einsteinium

1.3

100

Fm

Fermium

1.3

101

Md

Mendelevium

1.3

102

No

Nobelium

1.3

103

Lr

Lawrencium

1.3

104

Rf

Rutherfordium

 

105

Db

Dubnium

 

106

Sg

Seaborgium

 

107

Bh

Bohrium

 

108

Hs

Hassium

 

109

Mt

Meitnerium

 

110

Ds

Darmstadtium

 

111

Rg

Roentgenium

 

112

Cn

Copernicium

 

113

Nh

Nihonium

 

114

Fl

Flerovium

 

115

Mc

Moscovium

 

116

Lv

Livermorium

 

117

Ts

Tennessine

 

118

Og

Oganesson

 

 

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