4. Periodic table of the elements 1

4. PERIODIC TABLE OF THE ELEMENTS ). 18 Neon VIIIA Argon Xenon Radon 39.948 83.798 Helium 20.1797 131.293 Krypton 4.002602 2 He 10 Ne 18 Ar 36 Kr 54 Xe 86 Rn 118 (222.01758) Lutetium (262.110) 174.9668 71 Lu 103 Lr Lawrencium 17 VIIA 35.45 Iodine 79.904 Fluorine Bromine Astatine Chlorine 9 F 17 Cl 35 Br 53 I 85 At 117 126.90447 (209.98715) 18.998403163 le isotope is given in 5-117-and-118.html 173.054 Nobelium 70 Yb 102 No (259.1010) Ytterbium c masses (bottom) of 16 VIA ies of elements 113, 115, 117, 32.06 Sulfur 15.999 78.971 127.60 Oxygen Selenium Polonium Tellurium (293.204) 8 O 16 S 34 Se 52 Te 84 Po 116 Lv (208.98243) Livermorium Thulium 69 Tm 101 Md 168.93422 Mendelevium (258.09843) 15 VA , 1603 (2012). Information about the 14.007 Arsenic 121.760 Bismuth Nitrogen 30.973761998 208.98040 Antimony Phosphorus 7 N 15 P 33 As 51 Sb 83 Bi 115 74.921595 36 Erbium 167.259 Fermium 68 Er 100 Fm ures given for the mass. The masses are (257.09510) 14 c terrestrial compositions. Relative isotopic Tin IVA Lead 207.2 Silicon C, defined to be exactly 12 unified atomic 72.630 28.085 chnical Report),” with minor updates from Carbon 12.0107 118.710 (289.190) 6 C 14 Si 32 Ge 50 Sn 82 Pb 114 Fl Flerovium germanium 12 Holmium 67 Ho 99 Es (252.0830) 164.93033 Einsteinium 13 IIIA 10.81 Boron 69.723 204.38 Indium Gallium 114.818 Thallium 5 B 13 Al 31 Ga 49 In 81 Tl 113 Aluminum 26.9815385 162.500 66 Dy 98 Cf 12 (251.07959) IIB Dysprosium Californium Zinc 65.38 112.414 200.592 Mercury Cadmium (285.177) 30 Zn 48 Cd 80 Hg 112 Cn Copernicium Terbium IB 65 Tb 97 Bk Berkelium 158.92535 (247.07031) Gold Silver 63.546 Copper (282.169) 107.8682 29 Cu 47 Ag 79 Au 111Roentgen. Rg 196.966569 d-assignment-of-elements-with-atomic-numbers-113-11 157.25 Curium 10 11 64 Gd 96 Cm Gadolinum Nickel (247.07035) 106.42 195.084 58.6934 . If there is no stable isotope the atomic mass of the most stab Platinum (281.165) 28 Ni 46 Pd 78 Pt 110 Ds Palladium Darmstadt. , 036301 (2015). IUPAC announced verification of the discover 78 r (top left) is the number of protons in the nucleus. The atomi 9 VIII 151.964 Europium 63 Eu 95 Am Cobalt Americium Iridium (243.06138) 192.217 Rhodium (278.156) 102.90550 58.933195 27 Co 45 Rh 77 Ir 109 Mt Meitnerium “The AME2012 atomic mass evaluation (II),” Chin. Phys. C 8 Iron 150.36 55.845 101.07 190.23 62 Sm 94 Pu Samarium Plutonium Osmium Hassium (244.06420) (277.152) 26 Fe 44 Ru 76 Os 108 Hs et al. Ruthenium nd U, which have no stable isotopes but do have characteristi arth’s surface. Atomic masses are relative to the mass of h period of the periodic table is now complete. mercial samples; this is reflected in the number of significant fig 7 VIIB Wang, weights-revised-v2.html onkov, Rep. Prog. Phys. 186.207 Bohrium Rhenium 61 Pm 93 Np , 1047 (2013), “Atomic weights of the elements 2011 (IUPAC Te (270.133) 25 Mn 43 Tc 75 Re 107 Bh 54.938044 Neptunium (237.04817) (144.91276) Manganese Technetium Promethium (97.907212) 85 6 VIB 95.95 183.84 51.9961 Molybd. 144.242 Tungsten Uranium (271.134) 24 Cr 42 Mo 74 W 106 Sg Chromium 60 Nd 92 U Seaborgium 238.02891 Neodymium 5 VB 50.9415 Niobium (268.126) 92.90637 Dubnium Tantalum 23 V 41 Nb 73 Ta 105 Db Vanadium 180.94788 231.03588 59 Pr 91 Pa 140.90766 Praseodym. Protactinium , Pure Appl. Chem. 4 IVB PERIODIC TABLE OF THE ELEMENTS 47.867 178.49 91.224 Hafnium (267.122) Titanium www.iupac.org/news/news-detail/article/discovery-an 22 Ti 40 Zr 72 Hf 104 Rf Zirconium Cerium Rutherford. 140.116 et al. Thorium 232.0377 58 Ce 90 Th 3 IIIB nides 57–71 lantha- 89–103 Yttrium Actinides 88.90584 Scandium 44.955908 21 Sc 39 Y Actinium 57 La 89 Ac 138.90547 Lanthanum (227.02775) 2 IIA 87.62 Revised February 2016 by D.E. Groom (LBNL). The atomic numbe 24.305 40.078 Barium Radium 137.327 Calcium 9.012182 Beryllium 4 Be 12 Mg 20 Ca 38Strontium Sr 56 Ba 88 Ra Magnesium (226.02541) series series Actinide 1 IA Lanthanide 6.94 1.008 Sodium Lithium 39.0983 85.4678 Caesium Francium Hydrogen Rubidium 1 H 3 Li 11 Na 19 K 37 Rb 55 Cs 87 Fr Potassium (223.01974) 22.98976928 super-heavy elements is from Yu.Ts. Oganessian and V.K. Uty and 118 on 30Final December names 2015 ( have not been accepted as of February 2016. The 7t parentheses. Atomic masses of unstable isotopes are from M. iupac.org/news/news-detail/article/standard-atomic- stable elements are weighted by isotopic abundances in the E mass units (u) (approx. g/mole). The exceptions are Th, Pa, a abundances often varyadapted considerably, from both M.E. in Wieser, natural and com Table 4.1. 132.90545196