________________ Ar N & O Families Halogen Inert gas A & A.E.M. A & A.E.M. 16. Sulphur S 32.064 VIA 2 8 17. Chlorine 35.453 VIIA 2 8 18. Argon 30.948 VIIIA 2 8 19. Potassium 39.102 A 2 8 20. Calcium 40.08 IIA 2 8 21. Scandium 44.956 IIIB 2 8 22. Titanium 47.90 IVB 2 8 23. Vanadium V 50.942 VB 2 8 11 24. Chromium Cr 51.996 VIB 2 8 13 25. Manganese Mn 54.938 VIIB 2 8 13 26. (Ferrum) Iron Fe 55.847 VIIIB 2 8 14 27. Cobalt Co 58.933 VIIIB 2 8 15 Ti First Transition Metals 1 2 2 2 The Triads Second Transition Metals Third Transition Metals B & C Fam. B & C Fam. N & O Fam. N & O Fam. Halogen Inert gas (A & A.E.M. ST First Transition Mettals 28. Nickel : Ni 58.71 VIIIB 2 8 16 2 29. Copper Cu 63.54 IB 2 8 18 1 63.74 30. Zinc Zn 65.37 TIB 2 8 18 2 65.54 31. Gallium Ga 69.72 IIIA 2 8 18 3 32. Germanium Ge 72.59 IVA 28 18 4 33. Arsenic As 74.922VA 2 8 18 5 34. Selenium Se 78.96 VIA 2 8 18 35. Bromine 79.909 VIIA 2 8 18 7 36. Krypton 83.80 VIIIA 2 8 18 8 37. Rubiduim 85.47 IA 2 8 18 8 38. Strontium 87.62 IIA 2 8 18 8 39. Yitrium Y 88.095 WIB 2 8 18 9 2 40. Zirconium Zr 91.22 IVB 2 8 18 10 2 41. Niobium NB 92.906 VB 2 8 18 12 1 42. Molybdenum Mo 95.94 VIB 2 8 18 13 1 43. Technetium Tc 99.00 VIIB 2 8 18 13 2 44. Ruthenium Ru 101.07 VIIIB 2 8 18 15 1 45. Rhodium Rh 102.91 VIIIB 2 8 18 16 1 46. Palladium Pd 106.4 VIIIB 2 8 18 18 47. (Argentum) Silver Ag 107.87 IB 2 8 18 18 1 48. Cadmium C d 112.40 IIB 2 8 18 18 2 49. Indium In 114.82 IIIA 2 8 18 18 3 50. (Stannum) Tin Sn 118.69 IVA 2 8 18 18 4 51. Antimony S6 121.75 VA 2 8 18 18 5 52. Tellurium Te 127.60 VIA 2 8 18 18 6 53. lodine 126.90 VIIA 2 8 18 18 7 54. Xenom Xe 131.30 VIJIA 2 8 18 18 8 55. Cesium Cs 132.91 TA 2 8 18 18 8 56. Barium Ba 137.34 11A 2 8 18 18 8 57. Lanthanum La 138.91 TIB 2 8 18 18 9 58. Cerium Ce 140.12 2 8 18 19 9 59. Praseodyntium Pr 140.91 2 8 18 21 8 60. Ncodymium Nd 144.24 2 8 18 22 8 61. Promethium Pm 147.00 2 8 18 23 8 Triads Second Transition Metals (Third Transiti on Metals B & C Fam. B & C Fam. (N & O Fam. Halogen Inert gas A & A.E.M 1 2 2 2 57 to 71 Rare earths. 300 Jain Educationa International For Personal and Private Use Only www.jainelibrary.org