The periodic table of the elements

Los Alamos National Laboratory s Chemistry Division Presents Periodic Table of the Elements A Resource for Elementary, Middle School, and High School Students Click an element for more information: Period Group** 1 IA 1A 18 VIIIA 8A 1 1 H 1. 008 2 IIA 2A 13 IIIA 3A 14 IVA 4A 15 VA 5A 16 VIA 6A 17 VIIA 7A 2 He 4. 003 2 3 Li 6. 941 4 Be 9. 012 5 B 10. 81 6 C 12. 01 7 N 14. 01 8 O 16. 00 9 F 19. 00 10 Ne 20. 18 3 11 Na 22. 99 12 Mg 24. 31 3 IIIB 3B 4 IVB 4B 5 VB 5B 6 VIB 6B 7 VIIB 7B 8 9 10 11 IB 1B 12 IIB 2B 13 Al 26. 98 14 Si 28. 09 15 P 30. 97 16 S 32. 07 17 Cl 35. 45 18 Ar 39. 95 ------- VIII ------------- 8 ------4 19 K 39. 10 20 Ca 40. 08 21 Sc 44. 96 22 Ti 47. 88 23 V 50. 94 24 Cr 52. 00 25 Mn 54. 94 26 Fe 55. 85 27 Co 58. 47 28 Ni 58. 69 29 Cu 63. 55 30 Zn 65. 39 31 Ga 69. 72 32 Ge 72. 59 33 As 74. 92 34 Se 78. 96 35 Br 79. 90 36 Kr 83. 80 5 37 Rb 85. 47 38 Sr 87. 62 39 Y 88. 91 40 Zr 91. 22 41 Nb 92. 91 42 Mo 95. 94 43 Tc (98) 44 Ru 101. 1 45 Rh 102. 9 46 Pd 106. 4 47 Ag 107. 9 48 Cd 112. 4 49 In 114. 8 50 Sn 118. 7 51 Sb 121. 8 52 Te 127. 6 53 I 126. 9 54 Xe 131. 3 6 55 Cs 132. 9 56 Ba 137. 3 57 La* 138. 9 72 Hf 178. 5 73 Ta 180. 9 74 W 183. 9 75 Re 186. 2 76 Os 190. 2 77 Ir 190. 2 78 Pt 195. 1 79 Au 197. 0 80 Hg 200. 5 81 Tl 204. 4 82 Pb 207. 2 83 Bi 209. 0 84 Po (210) 85 At (210) 86 Rn (222) 7 87 Fr (223) 88 Ra (226) 89 Ac~ (227) 104 Rf (257) 105 Db (260) 106 Sg (263) 107 Bh (262) 108 Hs (265) 109 Mt (266) 110 --() 111 --() 112 --() 114 --() 116 --() 118 --() A Periodic Table of the Elements at Los Alamos National Laboratory http://pearl1. lanl. gov/periodic/default. htm (1 of 3) [8/29/2001 6:07:19 PM]