1

H

Hydrogen

1.008

3

Li

Lithium

6.941

11

Na

Sodium

22.990

19

K

Potassium

39.098

37

Rb

Rubidium

84.468

55

Cs

Cesium

132.905

87

Fr

Francium

223.020

4

Be

Beryllium

9.012

12

Mg

magnesium

24.305

20

Ca

Calcium

40.078

38

Sr

Strontium

87.62

56

Ba

Barium

137.327

88

Ra

Radium

226.025

21

Sc

Scandium

44.956

39

Y

Yttrium

88.906

57 - 71

 

Lanthanides

89 - 103

 

Actinides

Non-Metals

Alkalis

22

Ti

Titanium

47.88

40

Zr

Zirconium

91.224

72

Hf

Hafnium

178.49

104

Rf

Rutherfordium

[261]

Alkalines

Transitions

23

V

Vanadium

50.942

41

Nb

Niobium

92.906

73

Ta

Tantalum

180.948

105

Db

Dubnium

[262]

Basic-Metals

Semi-Metals

24

Cr

Chromium

51.996

42

Mo

Molybdenum

95.94

74

W

Tungsten

183.85

106

Sg

Seaborgium

[266]

Halogens

Noble-Gas

25

Mn

Manganese

54.938

43

Tc

Technetium

[97.907]

75

Re

Rhenium

186.207

107

Bh

Bohrium

[274]

Lanthanides

Actinides

26

Fe

Iron

55.938

44

Ru

Ruthenium

101.07

76

Os

Osmium

190.23

108

Hs

Hassium

[269]

27

Co

Cobalt

58.933

45

Rh

Rhodium

102.905

77

Ir

Iridium

192.217

109

Mt

Meitnerium

[276]

28

Ni

Nickel

58.693

46

Pd

Palladium

106.42

78

Pt

Platinum

195.084

110

Ds

Darmstadium

[281]

29

Cu

Copper

63.546

47

Ag

Silver

107.868

79

Au

Gold

196.966

111

Rg

Roentgenium

[281]

30

Zn

Zinc

65.380

48

Cd

Cadmium

112.414

80

Hg

Mercury

200.592

112

Cn

Copernicium

[285]

5

B

Boron

10.810

13

Al

Aluminum

26.981

31

Ga

Gallium

69.723

49

In

Indium

11.818

81

Tl

Thallium

204.380

113

Nh

Nihonium

[286]

6

C

Carbon

12.011

14

Si

Silicon

28.085

32

Ge

Germanium

72.630

50

Sn

Tin

118.710

82

Pb

Lead

207.200

114

Fl

Flerovium

[289]

7

N

Nitrogen

14.007

15

P

Phosphorus

30.674

33

As

Arsenic

74.921

51

Sb

Antimony

121.760

83

Bi

Bismuth

208.980

115

Mc

Moscovium

[288]

8

O

Oxygen

15.999

16

S

Sulfur

32.060

34

Se

Selenium

78.971

52

Te

Tellurium

127.60

84

Po

Polonium

[209]

116

Lv

Livermorium

[293]

9

F

Fluorine

18.998

17

Cl

Chlorine

35.450

35

Br

Bromine

79.904

53

I

Iodine

126.904

85

At

Astatine

[210]

117

Ts

Tennessine

[294]

2

He

Helium

4.003

10

Ne

Neon

20.180

18

Ar

Argon

39.948

36

Kr

Krypton

83.798

54

Xe

Xenon

131.293

86

Rn

Radon

[222]

118

Og

Oganesson

[294]

57

La

Lanthanum

138.906

89

Ac

Actinium

227.028

58

Ce

Cerium

140.115

90

Th

Thorium

232.038

59

Pe

Praseodymium

140.908

91

Pa

Protactinium

231.036

60

Nd

Neodymium

144.24

92

U

Uranium

238.029

61

Pm

Promethium

144.913

93

Np

Neptunium

237.048

62

Sm

Samarium

150.36

94

Pu

Plutonium

244.064

63

Eu

Europium

151.966

95

Am

Americium

243.061

64

Gd

Gadolinium

157.25

96

Cm

Curium

247.070

65

Td

Terbium

158.825

97

Bk

Berkelium

247.070

66

Dy

Dysprosium

162.50

98

Cf

Californium

251.080

67

Ho

Holmium

164.930

99

Es

Einsteinium

[254]

68

Er

Erbium

167.26

100

Fm

Fermium

257.095

69

Tm

Thulium

168.934

101

Md

Mendelevium

258.1

70

Yb

Ytterbium

173.04

102

No

Nobelium

259.101

71

Lu

Lutetium

174.967

103

Lr

lawrencium

[262]