Modern Periodic Table of Elements

1 H Hydrogen 1.008

2 He Helium 4.003

3 Li Lithium 6.940

4 Be Beryllium 9.012

5 B Boron 10.810

6 C Carbon 12.011

7 N Nitrogen 14.007

8 O Oxygen 15.999

9 F Fluorine 18.998

10 Ne Neon 20.180

11 Na Sodium 22.990

12 Mg Magnesium 24.305

13 Al Aluminium 26.982

14 Si Silicon 28.085

15 P Phosphorus 30.974

16 S Sulphur 32.060

17 Cl Chlorine 35.450

18 Ar Argon 39.948

19 K Potassium 39.098

20 Ca Calcium 40.078

21 Sc Scandium 44.956

22 Ti Titanium 47.867

23 V Vanadium 50.941

24 Cr Chromium 51.996

25 Mn Manganese 53.938

26 Fe Iron 55.845

27 Co Cobalt 58.933

28 Ni Nickel 58.693

29 Cu Copper 63.546

30 Zn Zinc 65.380

31 Ga Galium 69.723

32 Ge Germanium 72.630

33 As Arsenic 74.922

34 Se Selenium 78.971

35 Br Bromine 79.904

36 Kr Krypton 83.798

37 Rb Rubidium 85.468

38 Sr Strontium 87.620

39 Y Yttrium 88.906

40 Zr Zirconium 91.224

41 Nb Niobium 92.906

42 Mo Molybdenum 95.950

43 Tc Technetium 98.000

44 Ru Ruthenium 101.070

45 Rh Rhodium 102.906

46 Pd Palladium 106.420

47 Ag Silver 107.868

48 Cd Cadmium 112.414

49 In Indium 114.818

50 Sn Tin 118.710

51 Sb Antimony 121.760

52 Te Tellurium 127.600

53 I Iodine 126.904

54 Xe Xenon 131.293

55 Cs Caesium 132.905

56 Ba Barium 137.327

57 La Lanthanum 138.905

58 Ce Cerium 140.116

59 Pr Praseodymium 138.905

60 Nd Neodymium 144.242

61 Pm Promethium 145.000

62 Sm Samarium 150.360

63 Eu Europium 151.964

64 Gd Gadolinium 157.250

65 Tb Terbium 158.925

66 Dy Dysprosium 162.500

67 Ho Holmium 164.930

68 Er Erbium 167.259

69 Tm Thulium 168.934

70 Yb Ytterbium 173.045

71 Lu Lutetium 174.967

72 Hf Hafnium 178.490

73 Ta Tantalum 180.948

74 W Tungsten 183.840

75 Re Rhenium 186.207

76 Os Osmium 190.230

77 Ir Iridium 192.217

78 Pt Platinum 195.084

79 Au Gold 196.967

80 Hg Mercury 200.592

81 Tl Thallium 204.380

82 Pb Lead 207.200

83 Bi Bismuth 208.980

84 Po Polonium 209.000

85 At Astatine 210.000

86 Rn Radon 208.980

87 Fr Francium 223.000

88 Ra Radium 226.000

89 Ac Actinium 227.000

90 Th Thorium 231.038

91 Pa Protactinium 231.036

92 U Uranium 238.029

93 Np Neptunium 237.000

94 Pu Plutonium 244.000

94 Am Americium 243.000

96 Cm Curium 247.000

97 Bk Berkelium 247.000

98 Cf Californium 251.000

99 Es Einsteinium 252.000

100 Fm Fermium 257.000

101 Md Mendelevium 258.000

102 No Nobelium 259.000

103 Lw Lawrencium 262.000

104 Rf Rutherfordium 267.000

105 Db Dubnium 270.000

106 Sg Seaborgium 269.000

107 Bh Bohrium 270.000

108 Hs Hassium 270.000

109 Mt Meitnerium 278.000

110 Ds Darmstadtium 281.000

111 Rg Roentgenium 281.000

112 Cn Copernicium 285.000

113 Nh Nihonium 286.000

114 Fl Flerovium 289.000

115 Mc Moscovium 289.000

116 Lv Livermorium 289.000

117 Ts Tennessine 293.000

118 Og Oganesson 294.000