List of chemical symbols

Most chemical elements are represented symbolically by two letters, generally the first two in their name. In some cases, the first letter together with some other letter from their name was used, particularly when their first two letters had already been allocated to another element. A very few elements have symbols which appear to have no relationship with their names. In those cases, the origin of the symbol used is given.

Chemical symbol

Name of Element

Atomic No

Origin of Symbol

Ac

Actinium

89

 

Ag

Silver

47

From the Latin Argentum which originally meant shining metal

Al

Aluminium

13

 

Am

Americium

95

 

Ar

Argon

18

 

As

Arsenic

33

 

At

Astatine

85

 

Au

Gold

79

From the Latin Aurum which originally meant yellow

B

Boron

5

 

Ba

Barium

56

 

Be

Beryllium

4

 

Bh

Bhorium

107

 

Bi

Bismuth

83

 

Bk

Berkelium

97

 

Br

Bromine

35

 

C

Carbon

6

 

Ca

Calcium

20

 

Cd

Cadmium

48

 

Ce

Cerium

58

 

Cf

Californium

98

 

Cl

Chlorine

17

 

Cm

Curium

96

 

Co

Cobalt

27

 

Cr

Chromium

24

 

Cs

Caesium

55

 

Cu

Copper

29

From Cuprum, the Latin name for Cyprus, the Roman source of copper

Ds

Darmstadtium

110

 

Db

Dubnium

105

 

Dy

Dysprosium

66

 

Er

Erbium

68

 

Es

Einsteinium

99

 

Eu

Europium

63

 

F

Fluorine

9

 

Fe

Iron

26

From Ferrum, the Latin name for iron

Fm

Fermium

100

 

Fr

Francium

87

 

Ga

Gallium

31

 

Gd

Gadolinium

64

 

Ge

Germanium

32

 

H

Hydrogen

1

 

He

Helium

2

 

Hf

Hafnium

72

 

Hg

Mercury

80

From the Latin Hydragyrum meaning liquid silver

Ho

Holmium

67

 

Hs

Hassium

108

 

I

Iodine

53

 

In

Indium

49

 

Ir

Iridium

77

 

K

Potassium

19

From the Latin Kalium meaning alkali

Kr

Krypton

36

 

La

Lanthanum

57

 

Li

Lithium

3

 

Lr

Lawrencium

103

 

Lu

Lutetium

71

 

Md

Mendelevium

101

 

Mg

Magnesium

12

 

Mn

Manganese

25

 

Mo

Molybdenum

42

 

Mt

Meitnerium

109

 

N

Nitrogen

7

 

Na

Sodium

11

From Natrium, the Latin name for sodium carbonate

Nb

Niobium

41

 

Nd

Neodymium

60

 

Ne

Neon

10

 

Ni

Nickel

28

 

No

Nobelium

102

 

Np

Neptunium

93

 

O

Oxygen

8

 

Os

Osmium

76

 

P

Phosphorus

15

 

Pa

Protactinium

91

 

Pb

Lead

82

From the Latin Plumbum meaning soft white metal

Pd

Palladium

46

 

Pm

Promethium

61

 

Po

Polonium

84

 

Pr

Praseodymium

59

 

Pt

Platinum

78

 

Pu

Plutonium

94

 

Ra

Radium

88

 

Rb

Rubidium

37

 

Re

Rhenium

75

 

Rf

Rutherfordium

104

 

Rg

Roentgenium

111

 

Rh

Rhodium

45

 

Rn

Radon

86

 

Ru

Ruthenium

44

 

S

Sulphur

16

 

Sb

Antimony

51

From the Latin Stibium meaning cosmetic powder

Sc

Scandium

21

 

Se

Selenium

34

 

Sg

Seaborgium

106

 

Si

Silicon

14

 

Sm

Samarium

62

 

Sn

Tin

50

From Stannum, the Latin word for tin

Sr

Strontium

38

 

Ta

Tantalum

73

 

Tb

Terbium

65

 

Tc

Technetium

43

 

Te

Tellurium

52

 

Th

Thorium

90

 

Ti

Titanium

22

 

Tl

Thallium

81

 

Tm

Thulium

69

 

U

Uranium

92

 

V

Vanadium

23

 

W

Tungsten

74

From Wolfram, an old name for the element derived from its ore, Wolframite

Xe

Xenon

54

 

Y

Yttrium

39

 

Yb

Ytterbium

70

 

Zn

Zinc

30

 

Zr

Zirconium

40