Periodic Table of Elements Page Page Name Symbol Atomic Number Atomic Weight Oxidation States Density (grams/cubic centimeter) Electron Configuration Electro negativity Atomic Radius (Angstroms) Atomic Volume (cubic centimeters/mole) Ionization >Potential Specific Heat Capacity (Joules/gram/degree Kelvin) Thermal Conductivity (Watts/meter/degree Kelvin) Actinium Ac 89 227 3 10.07 [Rn] 6d1 7s2 1.1 1.88 22.5 5.17 0.12 12 Aluminum Al 13 26.98154 3 2.7 [Ne] 3s2 p1 1.61 1.43 10 5.986 0.9 237 Americium Am 95 243 6, 5, 4, 3 13.7 [Rn] 5f7 7s2 1.3 1.84 20.8 6 10 Antimony Sb 51 121.757 +/-3, 5 6.69 [Kr] 4d10 5s2 p3 2.05 1.59 18.4 8.641 0.207 24.3 Argon Ar 18 39.948 1.784 [Ne] 3s2 p6 0 0.88 24.2 15.759 0.52 0.0177 Arsenic As 33 74.9216 +/-3, 5 5.78 [Ar] 3d10 4s2 p3 2.18 1.39 13.1 9.81 0.33 50 Astatine At 85 210 +/-1, 3, 5, 7 [Xe] 4f14 5d10 6s2 p5 2.2 1.45 1.7 Barium Ba 56 137.33 2 3.59 [Xe] 6s2 0.89 2.22 39 5.212 0.204 18.4 Berkelium Bk 97 247 4, 3 [Rn] 5f9 7s2 1.3 6.23 10 Beryllium Be 4 9.01218 2 1.85 1s2 2s2 1.57 1.12 5 9.322 1.825 200 Bismuth Bi 83 208.9804 3, 5 9.75 [Xe] 4f14 5d10 6s2 p3 2.02 1.7 21.3 7.289 0.122 7.87 Bohrium Bh 107 262 [Rn] 5f14 6d5 7s2 Boron B 5 10.811 3 2.34 1s2 2s2 p1 2.04 0.98 4.6 8.298 1.026 27 Bromine Br 35 79.904 +/-1, 5 3.12 [Ar] 3d10 4s2 p5 2.96 1.12 23.5 11.814 0.226 0.122 Cadmium Cd 48 112.41 2 8.65 [Kr] 4d10 5s2 1.69 1.71 13.1 8.993 0.233 96.8 Calcium Ca 20 40.078 2 1.55 [Ar] 4s2 1 1.97 29.9 6.113 0.647 200 Californium Cf 98 251 3 [Rn] 5f10 7s2 1.3 6.3 10 Carbon C 6 12.011 +/-4, 2 2.26 1s2 2s2 p2 2.55 0.91 5.3 11.26 0.709 155 Cerium Ce 58 140.12 3, 4 6.77 [Xe] 4f1 5d1 6s2 1.12 1.81 21 5.47 0.19 11.4 Cesium Cs 55 132.9054 1 1.87 [Xe] 6s1 0.79 2.67 70 3.894 0.24 35.9 Chlorine Cl 17 35.4527 +/-1, 3, 5, 7 3.214 [Ne] 3s2 p5 3.16 0.97 18.7 12.967 0.48 0.0089 Chromium Cr 24 51.996 6, 3, 2 7.19 [Ar] 3d5 4s1 1.66 1.3 7.23 6.766 0.449 93.7 Cobalt Co 27 58.9332 2, 3 8.9 [Ar] 3d7 4s2 1.88 1.25 6.7 7.86 0.421 100 Copper Cu 29 63.546 2, 1 8.96 [Ar] 3d10 4s1 1.9 1.28 7.1 7.726 0.385 401 Curium Cm 96 247 3 13.5 [Rn] 5f7 6d1 7s2 1.3 18.3 6.02 10 Dubnium Db 105 262 [Rn] 5f14 6d3 7s2 Dysprosium Dy 66 162.5 3 8.55 [Xe] 4f10 6s2 1.22 1.8 19 5.93 0.173 10.7 Einsteinium Es 99 252 [Rn] 5f11 7s2 1.3 6.42 10 Erbium Er 68 167.26 3 9.07 [Xe] 4f12 6s2 1.24 1.78 18.4 6.101 0.168 14.3 Europium Eu 63 151.965 3, 2 5.24 [Xe] 4f7 6s2 1.2 1.99 28.9 5.67 0.182 13.9 Fermium Fm 100 257 [Rn] 5f12 7s2 1.3 6.5 10 Fluorine F 9 18.9984 -1 1.696 1s2 2s2 p5 3.98 0.57 17.1 17.422 0.824 0.0279 Francium Fr 87 223 1 [Rn] 7s1 0.7 2.7 0 15 Gadolinium Gd 64 157.25 3 7.9 [Xe] 4f7 5d1 6s2 1.2 1.8 19.9 6.15 0.236 10.6 Gallium Ga 31 69.723 3 5.91 [Ar] 3d10 4s2 p1 1.81 1.41 11.8 5.999 0.371 40.6 Germanium Ge 32 72.61 4 5.32 [Ar] 3d10 4s2 p2 2.01 1.37 13.6 7.899 0.32 59.9 Gold Au 79 196.9665 3, 1 19.3 [Xe] 4f14 5d10 6s1 2.54 1.46 10.2 9.225 0.128 317 Hafnium Hf 72 178.49 4 13.31 [Xe] 4f14 5d2 6s2 1.3 1.67 13.6 6.65 0.14 23 Hassium Hs 108 265 [Rn] 5f14 6d6 7s2 Helium He 2 4.0026 0.1785 1s2 0 0.49 31.8 24.587 5.193 0.152 Holmium Ho 67 164.9303 3 8.8 [Xe] 4f11 6s2 1.23 1.79 18.7 6.02 0.165 16.2 Hydrogen H 1 1.00794 1 0.0899 1s1 2.1 0.79 14.1 13.598 14.304 0.1815 Indium In 49 114.82 3 7.31 [Kr] 4d10 5s2 p1 1.78 1.66 15.7 5.786 0.233 81.6 Iodine I 53 126.9045 +/-1, 5, 7 4.93 [Kr] 4d10 5s2 p5 2.66 1.32 25.7 10.451 0.145 0.449 Iridium Ir 77 192.22 2, 3, 4, 6 22.6 [Xe] 4f14 5d7 6s2 2.2 1.36 8.54 9.1 0.13 147 Iron Fe 26 55.847 2, 3 7.874 [Ar] 3d6 4s2 1.83 1.26 7.1 7.87 0.449 80.2 Krypton Kr 36 83.8 3.75 [Ar] 3d10 4s2 p6 0 1.03 32.2 13.999 0.248 0.00949 Lanthanum La 57 138.9055 3 6.15 [Xe] 5d1 6s2 1.1 1.38 22.5 5.58 0.19 13.5 Lawrencium Lr 103 262 [Rn] 5f14 6d1 7s2 10 Lead Pb 82 207.2 4, 2 11.35 [Xe] 4f14 5d10 6s2 p2 2.33 1.75 18.3 7.416 0.129 35.3 Lithium Li 3 6.941 1 0.53 1s2 2s1 0.98 1.55 13.1 5.392 3.582 84.7 Lutetium Lu 71 174.967 3 9.84 [Xe] 4f14 5d1 6s2 1.27 1.75 17.8 5.43 0.15 16.4 Magnesium Mg 12 24.305 2 1.74 [Ne] 3s2 1.31 1.6 14 7.646 1.02 156 Manganese Mn 25 54.938 7, 6, 4, 2, 3 7.44 [Ar] 3d5 4s2 1.55 1.35 7.39 7.435 0.48 7.82 Meitnerium Mt 109 266 [Rn] 5f14 6d7 7s2 Mendelevium Md 101 258 [Rn] 5f13 7s2 1.3 6.58 10 Mercury Hg 80 200.59 2, 1 13.55 [Xe] 4f14 5d10 6s2 2 1.6 14.8 10.437 0.140 8.34 Molybdenum Mo 42 95.94 6, 5, 4, 3, 2 10.22 [Kr] 4d5 5s1 2.16 1.39 9.4 7.099 0.25 138 Neodymium Nd 60 144.24 3 7.01 [Xe] 4f4 6s2 1.14 1.82 20.6 5.49 0.19 16.5 Neon Ne 10 20.1797 0.900 1s2 2s2 p6 0 0.51 16.9 21.564 1.03 0.0493 Neptunium Np 93 237.0482 6, 5, 4, 3 20.2 [Rn] 5f4 6d1 7s2 1.36 1.3 21.1 6.19 6.3 Nickel Ni 28 58.6934 2, 3 8.9 [Ar] 3d8 4s2 1.91 1.24 6.6 7.635 0.444 90.7 Niobium Nb 41 92.9064 5, 3 8.57 [Kr] 4d4 5s1 1.6 1.46 10.8 6.88 0.265 53.7 Nitrogen N 7 14.0067 +/-3, 5, 4, 2 1.251 1s2 2s2 p3 3.04 0.92 17.3 14.534 1.042 0.02598 Nobelium No 102 259 [Rn] 5f14 7s2 1.3 6.65 10 Osmium Os 76 190.2 2, 3, 4, 6, 8 22.6 [Xe] 4f14 5d6 6s2 2.2 1.35 8.43 8.7 0.13 87.6 Oxygen O 8 15.9994 -2 1.429 1s2 2s2 p4 3.44 0.65 14 13.618 0.92 0.2674 Palladium Pd 46 106.42 2, 4 12 [Kr] 4d10 2.2 1.37 8.9 8.34 0.244 71.8 Phosphorus P 15 30.97376 +/-3, 5, 4 1.82 [Ne] 3s2 p3 2.19 1.28 17 10.486 0.769 0.235 Platinum Pt 78 195.08 2, 4 21.45 [Xe] 4f14 5d9 6s1 2.28 1.39 9.1 9 0.13 71.6 Plutonium Pu 94 244 6, 5, 4, 3 19.84 [Rn] 5f6 7s2 1.28 1.51 12.32 6.06 0.13 6.74 Polonium Po 84 209 4, 2 9.3 [Xe] 4f14 5d10 6s2 p4 2 1.67 22.7 8.42 20 Potassium K 19 39.0983 1 0.86 [Ar] 4s1 0.82 2.35 45.3 4.341 0.757 102.5 Praseodymium Pr 59 140.9077 3, 4 6.77 [Xe] 4f3 6s2 1.13 1.82 20.8 5.42 0.193 12.5 Promethium Pm 61 145 3 7.22 [Xe] 4f5 6s2 1.13 2.62 22.4 5.55 17.9 Protactinium Pa 91 231.0359 5, 4 15.4 [Rn] 5f2 6d1 7s2 1.5 1.61 15 5.88 47 Radium Ra 88 226.0254 2 5 [Rn] 7s2 0.89 2.33 45.2 5.279 0.094 18.6 Radon Rn 86 222 9.73 [Xe] 4f14 5d10 6s2 p6 0 1.34 50.5 10.748 0.094 0.00364 Rhenium Re 75 186.207 7, 6, 4, 2, -1 21 [Xe] 4f14 5d5 6s2 1.9 1.37 8.85 7.88 0.137 47.9 Rhodium Rh 45 102.9055 2, 3, 4 12.41 [Kr] 4d8 5s1 2.28 1.34 8.3 7.46 0.242 150 Rubidium Rb 37 85.4678 1 1.532 [Kr] 5s1 0.82 2.48 55.9 4.177 0.363 58.2 Ruthenium Ru 44 101.07 2, 3, 4, 6, 8 12.37 [Kr] 4d7 5s1 2.2 1.34 8.3 7.37 0.238 117 Rutherfordium Rf 104 261 [Rn] 5f14 6d2 7s2 Samarium Sm 62 150.36 3, 2 7.52 [Xe] 4f6 6s2 1.17 1.81 19.9 5.63 0.197 13.3 Scandium Sc 21 44.9559 3 2.99 [Ar] 3d1 4s2 1.36 1.62 15 6.54 0.568 15.8 Seaborgium Sg 106 263 [Rn] 5f14 6d4 7s2 Selenium Se 34 78.96 -2, 4, 6 4.79 [Ar] 3d10 4s2 p4 2.55 1.4 16.5 9.752 0.32 2.04 Silicon Si 14 28.0855 4 2.33 [Ne] 3s2 p2 1.9 1.32 12.1 8.151 0.70 148 Silver Ag 47 107.868 1 10.5 [Kr] 4d10 5s1 1.93 1.44 10.3 7.576 0.232 429 Sodium Na 11 22.98977 1 0.97 [Ne] 3s1 0.93 1.9 23.7 5.139 1.23 141 Strontium Sr 38 87.62 2 2.54 [Kr] 5s2 0.95 2.15 33.7 5.695 0.3 35.3 Sulfur S 16 32.066 +/-2, 4, 6 2.07 [Ne] 3s2 p4 2.58 1.27 15.5 10.36 0.71 0.269 Tantalum Ta 73 180.9479 5 16.65 [Xe] 4f14 5d3 6s2 1.5 1.49 10.9 7.89 0.14 57.5 Technetium Tc 43 98 7 11.5 [Kr] 4d5 5s2 1.9 1.36 8.5 7.28 0.24 50.6 Tellurium Te 52 127.6 -2, 4, 6 6.24 [Kr] 4d10 5s2 p4 2.1 1.42 20.5 9.009 0.202 2.35 Terbium Tb 65 158.9253 3, 4 8.23 [Xe] 4f9 6s2 1.1 1.8 19.2 5.86 0.18 11.1 Thallium Tl 81 204.383 3, 1 11.85 [Xe] 4f14 5d10 6s2 p1 2.04 1.71 17.2 6.108 0.129 46.1 Thorium Th 90 232.0381 4 11.72 [Rn] 6d2 7s2 1.3 1.8 19.9 6.08 0.113 54 Thulium Tm 69 168.9342 3, 2 9.32 [Xe] 4f13 6s2 1.25 1.77 18.1 6.184 0.16 16.8 Tin Sn 50 118.71 4, 2 7.31 [Kr] 4d10 5s2 p2 1.96 1.62 16.3 7.344 0.228 66.6 Titanium Ti 22 47.88 4, 3 4.54 [Ar] 3d2 4s2 1.54 1.45 10.6 6.82 0.523 21.9 Tungsten W 74 183.85 6, 5, 4, 3, 2 19.3 [Xe] 4f14 5d4 6s2 2.36 1.41 9.53 7.98 0.13 174 ununbium Uub 112 277 [Rn] 5f14 6d10 7s2 ununnilium Uun 110 269 [Rn] 5f14 6d8 7s2 unununium Uuu 111 272 [Rn] 5f14 6d9 7s2 Uranium U 92 238.029 6, 5, 4, 3 18.95 [Rn] 5f3 6d1 7s2 1.38 1.38 12.5 6.05 0.12 27.6 Vanadium V 23 50.9415 5, 4, 3, 2 6.11 [Ar] 3d3 4s2 1.63 1.34 8.35 6.74 0.489 30.7 Xenon Xe 54 131.29 5.9 [Kr] 4d10 5s2 p6 2.6 1.24 42.9 12.13 0.158 0.00569 Ytterbium Yb 70 173.04 3, 2 6.97 [Xe] 4f14 6s2 1.1 1.94 24.8 6.254 0.155 34.9 Yttrium Y 39 88.9059 3 4.47 [Kr] 4d1 5s2 1.22 1.78 19.8 6.38 0.3 17.2 Zinc Zn 30 65.39 2 7.13 [Ar] 3d10 4s2 1.65 1.38 9.2 9.394 0.388 116 Zirconium Zr 40 91.224 4 6.51 [Kr] 4d2 5s2 1.33 1.6 14.1 6.84 0.278 22.7