1 H 1.0079

Numéro atomique Symbole chimique Masse atomique (en g.mol-1)

2 He 4.0026

3 Li 6.941

4 Be 9.0122

5 B 10.811

6 C 12.011

7 N 14.007

8 O 15.999

9 F 18.998

10 Ne 20.180

11 Na 22.990

12 Mg 24.305

13 Al 26.982

14 Si 28.086

15 P 30.974

16 S 32.065

17 Cl 35.453

18 Ar 39.948

19 K 39.098

20 Ca 40.078

21 Sc 44.956

22 Ti 47.867

23 V 50.942

24 Cr 51.996

25 Mn 54.938

26 Fe 55.845

27 Co 58.933

28 Ni 58.693

29 Cu 63.546

30 Zn 65.38

31 Ga 69.723

32 Ge 72.64

33 As 74.922

34 Se 78.96

35 Br 79.904

36 Kr 83.798

37 Rb 85.468

38 Sr 87.62

39 Y 88.906

40 Zr 91.224

41 Nb 92.906

42 Mo 95.96

43 Tc

44 Ru 101.07

45 Rh 102.91

46 Pd 106.42

47 Ag 107.87

48 Cd 112.41

49 In 114.82

50 Sn 118.71

51 Sb 121.76

52 Te 127.60

53 I 126.90

54 Xe 131.29

55 Cs 132.91

56 Ba 137.33

72 Hf 178.49

73 Ta 180.95

74 W 183.84

75 Re 186.21

76 Os 190.23

77 Ir 192.22

78 Pt 195.08

79 Au 196.97

80 Hg 200.59

81 Tl 204.38

82 Pb 207.2

83 Bi 208.98

84 Po

85 At

86 Rn

87 Fr

88 Ra

104 Rf

105 Db

106 Sg

107 Bh

108 Hs

109 Mt

110 Ds

111 Rg

57 La 138.91

58 Ce 140.12

59 Pr 140.91

60 Nd 144.24

61 Pm

62 Sm 150.36

63 Eu 151.96

64 Gd 157.25

65 Tb 158.93

66 Dy 162.50

67 Ho 164.93

68 Er 167.26

69 Tm 168.93

70 Yb 173.05

71 Lu 174.97

89 Ac

90 Th 232.04

91 Pa 231.04

92 U 238.03

93 Np

94 Pu

95 Am

96 Cm

97 Bk

98 Cf

99 Es

100 Fm

101 Md

102 No

103 Lr