Periodic Table of the Elements

Clicking on an element will give you more information.
1

H

1.00794

2

He

4.00260

3

Li

6.941

4

Be

9.01218

nonmetal
semi-metal
metal
5

B

10.81

6

C

12.011

7

N

14.0067

8

O

15.9994

9

F

18.998403

10

Ne

20.1797

11

Na

22.98977

12

Mg

24.305

13

Al

26.98154

14

Si

28.0855

15

P

30.97376

16

S

32.066

17

Cl

35.453

18

Ar

39.948

19

K

39.0983

20

Ca

40.078

21

Sc

44.9559

22

Ti

47.88

23

V

50.9415

24

Cr

51.966

25

Mn

54.9380

26

Fe

55.847

27

Co

58.9332

28

Ni

58.69

29

Cu

63.546

30

Zn

65.39

31

Ga

69.72

32

Ge

72.61

33

As

74.9216

34

Se

78.96

35

Br

79.904

36

Kr

83.80

37

Rb

85.4678

38

Sr

87.62

39

Y

88.9059

40

Zr

91.224

41

Nb

92.9064

42

Mo

95.94

43

Tc

98

44

Ru

101.07

45

Rh

102.9055

46

Pd

106.42

47

Ag

107.8682

48

Cd

112.41

49

In

114.82

50

Sn

118.710

51

Sb

121.757

52

Te

127.60

53

I

126.9045

54

Xe

131.29

55

Cs

132.9054

56

Ba

137.33

57

La

138.9055

72

Hf

178.49

73

Ta

180.9479

74

W

183.85

75

Re

186.207

76

Os

190.2

77

Ir

192.22

78

Pt

195.08

79

Au

196.9665

80

Hg

200.59

81

Tl

204.83

82

Pb

207.2

83

Bi

208.9804

84

Po

209

85

At

210

86

Rn

222

87

Fr

223

88

Ra

226.0254

89

Ac

227.0278

104

Rf

261

105

Db

262

106

Sg

266

107

Bh

264

108

Hs

269

109

Mt

268

110
 
 

271

111
 
 

272

112
 
 

277

114
 
 

289

116
 
 

289

118
 
 

293

Lanthanides
58

Ce

140.12

59

Pr

140.9077

60

Nd

144.24

61

Pm

145

62

Sm

150.36

63

Eu

151.96

64

Gd

157.25

65

Tb

158.9254

66

Dy

162.50

67

Ho

164.9304

68

Er

167.26

69

Tm

168.9342

70

Yb

173.04

71

Lu

174.967

Actinides
90

Th

232.0381

91

Pa

231.0359

92

U

238.0289

93

Np

237.048

94

Pu

244

95

Am

243

96

Cm

247

97

Bk

247

98

Cf

251

99

Es

252

100

Fm

257

101

Md

258

102

No

259

103

Lr

262