Modern Periodic Table of Elements

DOT Hazard Class

1 H Hydrogen 2.1

2 He Helium 2.2

3 Li Lithium 4.3

4 Be Beryllium 6.1

7 N Nitrogen 2.2

9 F Fluorine 2.3

11 Na Sodium 4.3

12 Mg Magnesium 4.1

13 Al Aluminium 4.3

14 Si Silicon 4.1

15 P Phosphorus 4.1

18 Ar Argon 2.2

19 K Potassium 4.3

20 Ca Calcium 4.2

21 Sc Scandium 4.1

22 Ti Titanium 4.2

23 V Vanadium 4.1

24 Cr Chromium 4.1

25 Mn Manganese 4.1

27 Co Cobalt 4.1

28 Ni Nickel 4.1

29 Cu Copper 4.1

32 Ge Germanium 4.1

33 As Arsenic 61

34 Se Selenium 6.1

35 Br Bromine 8

36 Kr Krypton 2.2

37 Rb Rubidium 4.3

38 Sr Strontium 4.2

39 Y Yttrium 4.1

40 Zr Zirconium 4.2

42 Mo Molybdenum 4.1

44 Ru Ruthenium 4.1

45 Rh Rhodium 4.1

46 Pd Palladium 4.2

48 Cd Cadmium 6.1

49 In Indium 4.1

52 Te Tellurium 6.1

54 Xe Xenon 2.2

55 Cs Caesium 4.3

56 Ba Barium 4.3

57 La Lanthanum 4.1

58 Ce Cerium 4.1

60 Nd Neodymium

62 Sm Samarium 4.1

64 Gd Gadolinium

67 Ho Holmium 4.1

69 Tm Thulium 4.1

70 Yb Ytterbium

71 Lu Lutetium 4.1

72 Hf Hafnium 4.2

73 Ta Tantalum 4.1

74 W Tungsten 4.1

76 Os Osmium 4.1

77 Ir Iridium 4.1

78 Pt Platinum 4.1

80 Hg Mercury 8

83 Bi Bismuth 6.1

90 Th Thorium 7