2. H Hydrogen

3. Scandium Sc

4. Al Aluminum

5. Carbon C

6. N Nitrogen

7. Lanthanum La

8. Fr Francium

9. Potassium K

10. Zr Zirconium

11. Ag Silver

12. Gallium Ga

13. Ni Nickel

14. Copper Cu

15. Ne Neon

16. Krypton Kr

17. Ra Radium

18. Uranium U

19. Ac Actinium

20. Lithium Li

21. Mo Molybdenum

22. Silicon Si

23. Cd Cadmium

24. Xe Xenon

25. Chlorine Cl

26. S Sulfur

27. Radon Rn

28. Re Rhenium

29. Tungsten W

30. Cs Cesium

31. Strontium Sr

32. Pt Platinum

33. Antimony Sb

34. Y Yttrium

35. Barium Ba

36. Ar Argon

37. Sodium Na

38. Be Beryllium

39. Helium He

40. O Oxygen

41. Palladium Pd

42. F Fluorine

43. Germanium Ge

44. As Arsenic

45. Bromine Br

46. I Iodine

47. Hafnium Hf

48. Os Osmium

49. Mg Magnesium

50. Manganese Mn

51. V Vanadium

52. Titanium Ti

53. Pb Lead

54. Astatine At

55. Calcium Ca

56. Po Polonium

57. Lutetium Lu

58. Rb Rubidium

59. Bismuth Bi

60. Fe Iron

61. Iridium Ir

62. Co Cobalt

63. Thallium Tl

64. Hg Mercury

65. Tantalum Ta

66. B Boron

67. Gold Au

68. P Phosphorus

69. Niobium Nb

70. Zn Zinc

71. Technetium Tc

72. Rh Rhodium

73. Ruthenium Ru

74. Te Tellurium

75. Iridium Ir

76. Sn Tin

77. Indium In

78. Se Selenium