OFFSET
1,1
COMMENTS
Actinium, Aluminium, Americium, Antimony, Argon, Arsenic, Astatine, Barium, Berkelium, Beryllium, Bismuth, Bohrium, Boron, Bromine, Cadmium, Caesium, Calcium, Californium, Carbon, Cerium, Chlorine, Chromium, Cobalt, Copernicium, Copper, Curium, Darmstadtium, Dubnium, Dysprosium, Einsteinium, Erbium, Europium, Fermium, Flerovium, Fluorine, Francium, Gadolinium, Gallium, Germanium, Gold, Hafnium, Hassium, Helium, Holmium, Hydrogen, Indium, Iodine, Iridium, Iron, Krypton, Lanthanum, Lawrencium, Lead, Lithium, Livermorium, Lutetium, Magnesium, Manganese, Meitnerium, Mendelevium, Mercury, Molybdenum, Neodymium, Neon, Neptunium, Nickel, Niobium, Nitrogen, Nobelium, Osmium, Oxygen, Palladium, Phosphorus, Platinum, Plutonium, Polonium, Potassium, Praseodymium, Promethium, Protactinium, Radium, Radon, Rhenium, Rhodium, Roentgenium, Rubidium, Ruthenium, Rutherfordium, Samarium, Scandium, Seaborgium, Selenium, Silicon, Silver, Sodium, Strontium, Sulfur, Tantalum, Technetium, Tellurium, Terbium, Thallium, Thorium, Thulium, Tin, Titanium, Tungsten, Uranium, Vanadium, Xenon, Ytterbium, Yttrium, Zinc, Zirconium. As new elements are discovered, the IUPAC will add names to the list following suggestions of the synthesizing laboratory/institute, once a sufficient quantity of atoms has been produced and detected. - R. J. Mathar, Oct 14 2009 [Updated to include 114 (Flerovium) and 116 (Livermorium) by William Rex Marshall, Jun 04 2012]
The IUPAC gives alternate spellings for Aluminium (Aluminum) and Caesium (Cesium). The former doesn't affect the sequence, but the latter would change a(15)-a(21) from 48, 55, 20, 98, 6, 58, 17 to 48, 20, 98, 6, 58, 55, 17. - Michael B. Porter, May 18 2013
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..118 (older version with 114 terms from Michael B. Porter)
IUPAC, Naming the elements
IUPAC, Periodic table of elements
MATHEMATICA
Union[Array[{ElementData[#, "Name"] /. {"aluminum" -> "aluminium", "cesium" -> "caesium"}, #} &, 118]][[All, -1]] (* Michael De Vlieger, Feb 25 2020 *)
CROSSREFS
KEYWORD
fini,nonn,word
AUTHOR
Claudio Meller, Oct 11 2009
STATUS
approved