Periodic Table of Elements

1 IA 1A 1 1 2 IIA 2A Hydrogen 1 1s1 3 2 6.941 Li [He]2s1 [He]2s2 22.990 Na [Ne]3s2 Period K Ca 21 Sc 22 5 VB 5B 47.88 Ti C 23 6 VIB 6B 50.942 V 24 7 VIIB 7B 51.996 Cr 25 8 54.938 Mn 26 9 VIII 8 55.845 Fe 27 10 58.933 Co 28 12 IIB 2B 11 IB 1B 58.693 Ni 29 63.546 Cu 30 Zn 14.007 N 8 15.999 O 9 2 1s2 18.998 F Oxygen Fluorine [He]2s22p1 [He]2s22p2 [He]2s22p3 [He]2s22p4 [He]2s22p5 24 26.982 Al 14 25 28.086 Si 15 30.974 P 26 16 He Helium Nitrogen 10 20.180 Ne Neon 27 32.066 S 17 28 [He]2s22p6 35.453 Cl 18 39.948 Ar Aluminum Silicon Phosphorus Sulfur Chlorine Argon [Ne]3s23p1 [Ne]3s23p2 [Ne]3s23p3 [Ne]3s23p4 [Ne]3s23p5 [Ne]3s23p6 283 65.38 7 17 VIIA 7A Carbon 23 4 IVB 4B 44.956 12.011 16 VIA 6A Boron 13 3 IIIB 3B 6 15 VA 5A 4.003 31 69.723 Ga 284 32 285 72.631 Ge 33 74.922 As 286 34 287 78.971 Se 35 288 79.904 Br 36 83.798 Kr Potassium Calcium Scandium Titanium Vanadium Chromium Manganese 2 8 13 2 2 8 14 2 Iron Cobalt Nickel Copper 2 8 18 1 2 8 18 2 Zinc Gallium Germanium Arsenic Selenium Bromine Krypton [Ar]4s1 [Ar]4s2 [Ar]3d14s2 [Ar]3d24s2 [Ar]3d34s2 [Ar]3d54s1 [Ar]3d54s2 [Ar]3d64s2 [Ar]3d74s2 [Ar]3d84s2 [Ar]3d104s1 [Ar]3d104s2 [Ar]3d10 4s24p1 [Ar]3d104s24p2 [Ar]3d104s24p3 [Ar]3d104s24p4 [Ar]3d104s24p5 [Ar]3d104s24p6 2881 37 85.468 Rb 2882 38 87.62 Sr 2892 39 88.906 Y 2 8 10 2 40 2 8 11 2 91.224 Zr 41 2 8 13 1 92.906 Nb 42 95.95 Mo 43 98.907 Tc 44 2 8 15 2 101.07 Ru 45 2 8 16 2 102.906 Rh 46 106.42 Pd Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium [Kr]5s1 [Kr]5s2 [Kr]4d15s2 [Kr]4d25s2 [Kr]4d45s1 [Kr]4d55s1 [Kr]4d55s2 [Kr]4d75s1 [Kr]4d85s1 [Kr]4d10 2 8 18 8 1 55 132.905 Cs Cesium 2 8 18 18 8 1 [Xe]6s1 87 7 40.078 B Electron Configuration 282 20 Solid, Liquid or Gas 14 IVA 4A 10.811 Electron Shells Mg [Ne]3s1 39.098 5 24.305 Magnesium 19 6 12 13 IIIA 3A Element symbol represents state at room temperature. Name 22 Sodium 281 5 Be 2 Atomic Mass Symbol 9.012 Beryllium 11 4 4 Atomic Number Lithium 21 3 Periodic Table of the Elements 1.008 H 18 VIIIA 8A 223.020 Fr Francium 2 8 18 8 2 56 137.328 Ba 2 8 18 9 2 2 8 18 10 2 57-71 72 Barium 2 8 18 18 8 2 226.025 Ra Hf 89-103 73 2 8 18 13 1 180.948 Ta 74 183.84 W Hafnium Tantalum Tungsten [Xe]4f145d26s2 [Xe]4f145d36s2 [Xe]4f145d46s2 2 8 18 32 10 2 [Xe]6s2 88 178.49 2 8 18 12 1 104 [261] Rf 2 8 18 32 11 2 105 2 8 18 14 1 75 106 Db Re 108 [269] Hs 2 8 18 32 18 8 2 Radium Rutherfordium 2 8 18 32 32 10 2 2 8 18 32 32 11 2 Dubnium Seaborgium 2 8 18 32 32 12 2 2 8 18 32 32 13 2 2 8 18 32 32 14 2 [Rn]7s1 [Rn]7s2 [Rn]5f146d27s2* [Rn]5f146d37s2* [Rn]5f146d47s2* [Rn]5f146d57s2* [Rn]5f146d67s2* Lanthanide Series 138.905 La Lanthanum 2 8 18 18 9 2 [Xe]5d16s2 89 Actinide Series 140.116 Ce Cerium Ac 90 140.908 Pr 2 8 18 21 8 2 [Xe]4f36s2 232.038 Th 59 60 144.243 Nd Praseodymium Neodymium 2 8 18 20 8 2 [Xe]4f15d16s2 227.028 Actinium 58 91 231.036 Pa 2 8 18 22 8 2 [Xe]4f46s2 92 238.029 U 61 Hassium 144.913 Pm 62 2 8 18 16 1 77 192.217 Ir 78 Iridium Pt Platinum 2 8 18 32 15 2 [Xe]4f145d76s2 109 195.085 [278] 2 8 18 32 17 1 [Xe]4f145d96s1 110 [281] Ds 107.868 Ag 2 8 18 18 Mt 2 8 18 32 18 8 1 57 Bohrium Os [Xe]4f145d66s2 [264] Bh 190.23 2 8 18 32 14 2 [Xe]4f145d56s2 107 76 Osmium 2 8 18 32 13 2 [266] Sg 186.207 Rhenium 2 8 18 32 12 2 [262] 2 8 18 15 1 47 [Kr]4d105s1 [Kr]4d105s2 79 Au 2 8 18 32 18 1 2 8 18 32 18 2 82 207.2 Pb 83 2 8 18 32 18 4 208.980 Bi Po Polonium 2 8 18 32 18 5 2 8 18 32 18 6 2 8 18 18 8 [Kr]4d105s25p5 84 [208.982] 85 Bismuth Xenon 2 8 18 18 7 [Kr]4d105s25p6 209.987 At 86 Rn Astatine Radon 2 8 18 32 18 7 2 8 18 32 18 8 114 115 116 117 118 157.25 [Xe]4f75d16s2 [280] [285] Cn 2 8 18 25 9 2 247.070 Cm 158.925 Tb 66 Nh Nihonium Fl 2 8 18 32 32 18 3 Flerovium 162.500 Dy 67 164.930 Ho Holmium [Xe]4f96s2 [Xe]4f106s2 [Xe]4f116s2 247.070 Bk 2 8 18 28 8 2 98 Moscovium 2 8 18 32 32 18 5 [293] Lv Livermorium 2 8 18 32 32 18 6 [294] Ts Tennessine 2 8 18 32 32 18 7 Og Oganesson 2 8 18 32 32 18 8 251.080 Cf 68 [254] Es Er Erbium 2 8 18 29 8 2 99 167.259 2 8 18 30 8 2 [Xe]4f126s2 69 Tm 70 173.055 Yb 71 174.967 Lu Thulium Ytterbium Lutetium [Xe]4f136s2 [Xe]4f146s2 [Xe]4f145d16s2 2 8 18 31 8 2 100 257.095 101 Fm 168.934 258.1 Md 2 8 18 32 8 2 2 8 18 32 9 2 102 259.101 103 No [262] Lr Thorium Protactinium 2 8 18 32 20 9 2 2 8 18 32 21 9 2 Uranium Neptunium Plutonium Americium 2 8 18 32 25 8 2 2 8 18 32 25 9 2 2 8 18 32 27 8 2 Berkelium Californium Einsteinium 2 8 18 32 29 8 2 2 8 18 32 30 8 2 Fermium Mendelevium 2 8 18 32 31 8 2 2 8 18 32 32 8 2 Nobelium Lawrencium [Rn]6d17s2 [Rn]6d27s2 [Rn]5f26d17s2 [Rn]5f36d17s2 [Rn]5f46d17s2 [Rn]5f67s2 [Rn]5f77s2 [Rn]5f76d17s2 [Rn]5f97s2 [Rn]5f107s2 [Rn]5f117s2 [Rn]5f127s2 [Rn]5f137s2 [Rn]5f147s2 [Rn]5f146d17s2 Noble Gas Lanthanide Alkali Metal Alkaline Earth Transition Metal Basic Metal Metalloid Nonmetal Halogen [294] [Rn]5f146d107s27p1* [Rn]5f146d107s27p2* [Rn]5f146d107s27p3* [Rn]5f146d107s27p4* [Rn]5f146d107s27p5* [Rn]5f146d107s27p6* Dysprosium 97 [289] Mc 2 8 18 32 32 18 4 Terbium 2 8 18 27 8 2 [289] 2 8 18 32 18 10 2 2 8 18 32 24 8 2 Curium 65 [286] 2 8 18 32 18 9 2 2 8 18 32 23 8 2 222.018 113 [Xe]4f76s2 Am [Kr]4d105s25p4 Xe 112 [Xe]4f66s2 Pu [Kr]4d105s25p3 Iodine 131.249 111 Gd 96 [Kr]4d105s25p2 2 8 18 18 6 I 54 [Xe]4f145d106s26p6 [Xe]4f56s2 243.061 Tellurium 2 8 18 18 5 126.904 [Xe]4f145d106s26p5 [Rn]5f146d107s2* 95 Antimony 53 [Xe]4f145d106s26p4 [Rn]5f146d97s2* 244.064 Te Tin Lead 2 8 18 32 18 3 127.6 [Xe]4f145d106s26p3 [Rn]5f146d87s2* 2 8 18 25 8 2 Tl Sb 52 2 8 18 8 [Xe]4f145d106s26p2 [Rn]5f146d77s2* 2 8 18 24 8 2 204.383 121.760 2 8 18 7 [Xe]4f145d106s26p1 2 8 18 32 32 18 2 Eu Sn 51 2 8 18 6 [Xe]4f145d106s2 Rg 64 118.711 2 8 18 18 4 Thallium 2 8 18 32 32 17 2 151.964 81 Mercury 2 8 18 32 32 16 2 63 50 2 8 18 5 [Xe]4f145d106s1 Gadolinium Np 200.592 2 8 18 32 32 15 2 150.36 In [Kr]4d105s25p1 Hg Gold 114.818 2 8 18 18 3 Meitnerium Darmstadtium Roentgenium Copernicium Sm 94 80 49 2 8 18 4 Indium 2 8 18 18 2 196.967 Europium 237.048 Cd Cadmium Samarium 93 112.414 Silver 2 8 18 18 1 Promethium 2 8 18 23 8 2 48 2 8 18 3 2 8 18 32 28 8 2 2 8 18 32 32 9 2 Actinide © 2017 Todd Helmenstine sciencenotes.org

Periodic Table of Elements

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