PARTIAL Table of the Chemical Elements -- Listing 7 essential parameters -- Atomic Number | Atomic Symbol | | Atomic or Element Name | | | Valence Number (primary) | | | | Atomic Mass or Weight | | | | | Electronegativity (Pauling) | | | | | | Group / Type / Class | | | | | | | 1 H Hydrogen 1 1.008 2.20 Alkali Metal/Halogen 2 He Helium 2 4.003 n/a Noble Gas 3 Li Lithium 1 6.94 0.98 Alkali Metal 4 Be Beryllium 2 9.01 1.57 Alkaline Earth Metal 5 B Boron 3 10.81 2.04 Metaloid or Semimetalic 6 C Carbon 4 12.01 2.55 Nonmetal 7 N Nitrogen 5 14.01 3.04 Nonmetal 8 O Oxygen 6 16.00 3.44 Nonmetal 9 F Fluorine 7 19.00 3.98 Halogen 10 Ne Neon 8 20.18 n/a Noble Gas 11 Na Sodium 1 22.99 0.93 Alkali Metal 12 Mg Magnesium 2 24.31 1.31 Alkaline Earth Metal 13 Al Aluminum 3 26.98 1.61 Metal (other) 14 Si Silicon 4 28.09 1.90 Metaloid or Semimatalic 15 P Phosphorus 5 30.97 2.19 Nonmetal 16 S Sulfur 6 32.07 2.58 Nonmetal 17 Cl Chlorine 7 35.45 3.16 Halogen 18 Ar Argon 8 39.95 n/a Noble Gas 19 K Potassium 1 39.10 0.82 Alkali Metal 20 Ca Calcium 2 40.08 1.00 Alkaline Earth Metal 21 Sc Scandium 3 44.96 1.36 Metal 22 Ti Titanium 4 47.87 1.54 Metal 23 V Vanadium 5 50.94 1.63 Metal 24 Cr Chromium 3 52.00 1.66 Metal 25 Mn Manganese 2 54.94 1.55 Metal 26 Fe Iron 3 55.85 1.83 Metal 27 Co Cobalt 2 58.93 1.88 Metal 28 Ni Nickel 3 58.69 1.91 Metal 29 Cu Copper 2 63.55 1.90 Metal 30 Zn Zinc 2 65.39 1.65 Metal 31 Ga Gallium 3 69.72 1.81 Metal (other) 32 Ge Germanium 4 72.61 2.01 Metal (metaloid) 33 As Arsenic 3 74.92 2.18 Metal (metaloid) 34 Se Selenium 4 78.96 2.55 Nonmetal 35 Br Bromine 1 79.90 2.96 Halogen 36 Kr Krypton 8 83.80 n/a Noble Gas 37 Rb Rubidium 1 85.47 0.82 Alkali Metal 38 Sr Strontium 2 87.62 0.95 Alkaline Earth Metal 39 Y Yttrium 3 88.91 1.22 Metal 40 Zr Zirconium 4 91.22 1.33 Metal Jim Shook 6/12/2009