1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1

1

H

Hydrogen

1.008

2

He

Helium

4.002602

Metalloid Elements Halogen Elements
2

3

Li

Lithium

6.94

4

Be

Beryllium

9.012

5

B

Boron

10.81

6

C

Carbon

12.011

7

N

Nitrogen

14.007

8

O

Oxygen

15.999

9

F

Fluorine

18.998

10

Ne

Neon

20.1797

Noble Gas Elements Alkali Metal Elements
3

11

Na

Sodium

2.989

12

Mg

Magnesium

24.305

13

Al

Alumnium

26.981

14

Si

Silicon

28.085

15

P

Phosphorus

30.973

16

S

Sulfur

32.06

17

Cl

Chlorine

35.45

18

Ar

Argon

39.948

Alkaline Earth Metals Lanthanoid Elements
4

19

K

Potassium

39.0983

20

Ca

Calcium

40.078

21

Sc

Scandium

44.955

22

Ti

Titanium

47.867

23

V

Vanadium

50.9415

24

Cr

Chromium

51.996

25

Mn

Manganese

54.938

26

Fe

Iron

55.845

27

Co

Cobalt

58.933

28

Ni

Nickel

58.6934

29

Cu

Copper

63.54

30

Zn

Zinc

65.38

31

Ga

Gallium

69.723

32

Ge

Germanium

72.63

33

As

Arsenic

74.921

34

Se

Selenium

78.971

35

Br

Bromine

79.304

36

Kr

Krypton

83.798

Actinoid Elements Transition Metal Elements
5

37

Rb

Rubidium

85.467

38

Sr

Strontium

87.62

39

Y

Yttrium

88.9058

40

Zr

Zirconium

91.224

41

Nb

Niobium

92.90637

42

Mo

Molybdenum

95.95

43

Tc

Technetium

98

44

Ru

Ruthenium

101.07

45

Rh

Rhodium

102.9

46

Pd

Palladium

106.42

47

Ag

Silver

107.8682

48

Cd

Cadmium

112.414

49

In

Indium

114.818

50

Sn

Tin

118.710

51

Sb

Antimony

121.760

52

Te

Tellurium

127.6

53

I

Iodine

126.9

54

Xe

Xenon

131

Post-Transition Metal Elements Other Non-Metals
6

55

Cs

Caesium

132.9

56

Ba

Barium

137.327

57-71

72

Hf

Hafnium

178.49

73

Ta

Tantalum

180.94

74

W

Tungsten

183.84

75

Re

Rhenium

186.207

76

Os

Osmium

190.23

77

Ir

Iridium

192.217

78

Pt

Platinum

195.084

79

Au

Gold

196.96

80

Hg

Mercury

200.59

81

Ti

Thallium

204.38

82

Pb

Lead

207.2

83

Bi

Bismuth

208.98

84

Po

Polonium

209

85

At

Astatine

210

86

Rn

Radon

222

Number

Symbol

Element Name

Weight

7

87

Fr

Francium

223

88

Ra

Radium

226

89-103

104

Rf

Rutherfordium

267

105

Db

Dubnium

268

106

Sg

Seaborgium

271

107

Bh

Bohrium

272

108

Hs

Hassium

270

109

Mt

Mitnerium

276

110

Ds

Darmstadtium

281

111

Rg

Roentgenium

280

112

Cn

Copemicium

285

113

Uut

Ununtrium

284

114

Fl

Flerovium

289

115

Uup

Ununpentium

288

116

Lv

Livemorium

293

117

Uus

Ununseptium

294

118

Uuo

Ununoctium

294

Download The Table As A PDF File

57

La

Lanthanum

138.9

58

Ce

Cerium

140.116

59

Pr

Praseodymium

140.9

60

Nd

Neodymium

144.24

61

Pm

Promethium

145

62

Sm

Samarium

150.36

63

Eu

Europium

151.964

64

Gd

Gadolinium

157.25

65

Tb

Terbium

158.92

66

Dy

Dysprosium

162.5

67

Ho

Holmium

164.93

68

Er

Erbium

167.259

69

Tm

Thulium

168.93

70

Yb

Ytterbium

173.054

71

Lu

Lutetium

174.9668

89

Ac

Actinium

227

90

Th

Thorium

232.0377

91

Pa

Protactinium

231.03

92

U

Uranium

238.02

93

Np

Neptunium

237

94

Pu

Plutonium

244

95

Am

Americium

243

96

Cm

Curium

247

97

Bk

Berkelium

247

98

Cf

Californium

251

99

Es

Einsteinium

252

100

Fm

Fermium

257

101

Md

Mendelevium

258

102

No

Nobelium

259

103

Lr

Lawrencium

262