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