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PERIODIC TABLE OF THE ELEMENTS 18 1 IA He H 1 14 13 14 15 16 17 2 IVA IVA VA VIA VIA Li C Be B C N F Ne 2 Carbon Daygen Na Mg AI Si P S CI Ar 3 3 4 5 6 7 8 9 10 11 12 IVB VB VIB VIIB 24 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga 4 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd 5 Cs Ba La Hf Ta W Re Os Ir Pt H 6 104 Fr Ra Ac Rf Db 7 chemistry Electron Shells 1 2 2 2 La Ce L From the word alchemy, the 3 M 18 2 4 N 2 14 scientific study of the basic 32 2 6 Th P characteristics of substances and 6 P 18 2 Ac 7 the ways in which they react or 2 3S combine. 0 H H CH N OH H H OH Yttrium Techne Db TRANSITION 20 16 Ti R nesium Dubnium Titanium Rhen 37 V TRANSITION 12 33 3 Cr TRANSITION r 7 12 5. Chromium 30 um Bohr METAL TAL 26 26 Mo 29 28 as 23 20 20 F 36 f Molybdenum 27 25 m 26 TRANSITION METAL 29 28 20 23 W