Chalcogen

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Chalcogens
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Airn Cobalt Nickel Capper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Siller (element) Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gowd Mercur (element) Thallium Leid (element) Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium
pnictogens  halogens
IUPAC group number 16
Name by element oxygen group
Trivial name chalcogens
CAS group nummer
(US, pattern A-B-A)
VIA
auld IUPAC nummer
(Europe, pattern A-B)
VIB

↓ Period
2
Image: An oxygen discharge tube
Oxygen (O)
8 Diatomic nonmetal
3
Image: Sulfur
Sulfur (S)
16 Polyatomic nonmetal
4
Image: 2 allotropes o selenium: black an reid. 3 ithers nae shawn.
Selenium (Se)
34 Polyatomic nonmetal
5
Image: Tellurium in metallic form
Tellurium (Te)
52 Metalloid
6 Polonium (Po)
84 Post-transition metal
7 Livermorium (Lv)
116 Unkent chemical properties

Legend
primordial element
naiturally occurrin bi radioactive decay
synthetic element
Atomic nummer colour:
red=gasblack=solid

The chalcogens are the chemical elements in group 16 o the periodic cairt. This group is an aa kent as the oxygen faimily. It conseests o the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), an the radioactive element polonium (Po). The chemically unchairacterised synthetic element livermorium (Lv) is predictit tae be a chalcogen as well.[1] Eften, oxygen is treatit separately frae the other chalcogens, whiles even excludit from the scope o the term "chalcogen" awthegither, due tae its very different chemical behaviour frae sulfur, selenium, tellurium, an polonium.

References[eedit | eedit soorce]

  1. Emsley, John (2011). Nature's Building Blocks: An A-Z Guide to the Elements (New ed.). New York, NY: Oxford University Press. pp. 375–383, 412–415, 475–481, 511–520, 529–533, 582. ISBN 978-0-19-960563-7.