Template:Infobox krypton

Krypton, 36Kr
Template:Infobox element/symbol-to-top-image/alt
A krypton-filled dischairge tube glowin white
Krypton
Pronunciation/ˈkrɪptɒn/ (KRIP-ton)
Appearancecolourless gas, exhibitin a whitish glow in a heich electric field
Standard atomic weight Ar, std(Kr)83.798(2)[1]
Krypton in the periodic cairt
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
Ar

Kr

Xe
brominekryptonrubidium
Atomic nummer (Z)36
Groupgroup 18 (noble gases)
Periodperiod 4
Blockp-block
Element category  Noble gas
Electron confeeguration[Ar] 3d10 4s2 4p6
Electrons per shell2, 8, 18, 8
Pheesical properties
Phase at STPgas
Meltin pynt115.78 K ​(-157.37 °C, ​-251.27 °F)
Bylin pynt119.93 K ​(-153.415 °C, ​-244.147 °F)
Density (at STP)3.749 g/L
whan liquid (at b.p.)2.413[2] g/cm3
Treeple pynt115.775 K, ​73.53[3] kPa [4]
Creetical pynt209.48 K, 5.525[3] MPa
Heat o fusion1.64 kJ/mol
Heat o vapourisation9.08 kJ/mol
Molar heat capacity5R/2 = 20.786 J/(mol·K)
Vapour pressur
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 59 65 74 84 99 120
Atomic properties
Oxidation states0, +1, +2 (rarely mair nor 0; oxide is unknown)
ElectronegativityPauling scale: 3.00
Covalent radius116±4 pm
Van der Waals radius202 pm
Colour lines in a spectral range
Spectral lines o krypton
Ither properties
Naitural occurrenceprimordial
Creestal structurface-centred cubic (fcc)
Cubic face-centered creestal structur for krypton
Speed o soond(gas, 23 °C) 220, (liquid) 1120 m/s
Thermal conductivity9.43×10-3  W/(m·K)
Magnetic orderindiamagnetic[5]
CAS Nummer7439-90-9
History
DiskiveryWilliam Ramsay an Morris Travers (1898)
First isolationWilliam Ramsay an Morris Travers (1898)
Main isotopes o krypton
Iso­tope Abun­dance Hauf-life (t1/2) Decay mode Pro­duct
78Kr 0.35% >1.1×1020 y (β+β+) 78Se 79Kr syn 35.04 h ε 79Br
β+ 79Br
γ -
80Kr 2.25% stable
81Kr trace 2.29×105 y ε 81Br
γ -
82Kr 11.6% stable
83Kr 11.5% stable
84Kr 57.0% stable
85Kr syn 10.756 y β 85Rb
86Kr 17.3% - (ββ) 86Sr
Decay modes in parentheses are predictit, but hae nae yet been observed
| references
style="text-align:left"|
in calc from C diff report ref
C
K 115.78 115.78 0
F -251.27 −251.27 0
WD Edit this at Wikidata
input C: -157.37, K: 115.78, F: -251.27
comment
style="text-align:left"|
in calc from C diff report ref
C
K 119.93 119.735 0.195 delta
F -244.147 −244.147 0
WD Edit this at Wikidata
input C: -153.415, K: 119.93, F: -244.147
comment

References

Thir references will appear in the airticle, but this list appears anerly on this page.
  1. Meija, Juris; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry. 88 (3): 265–91. doi:10.1515/pac-2015-0305.
  2. Krypton. encyclopedia.airliquide.com
  3. 3.0 3.1 Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nt ed.). CRC Press. p. 4.121. ISBN 1439855110.
  4. "Section 4, Properties of the Elements and Inorganic Compounds; Melting, boiling, triple, and critical temperatures of the elements". CRC Handbook of Chemistry and Physics (85th ed.). Boca Raton, Florida: CRC Press. 2005.
  5. Magnetic susceptibility of the elements and inorganic compounds, in Lide, D. R., ed. (2005). CRC Handbook of Chemistry and Physics (86th ed.). Boca Raton (FL): CRC Press. ISBN 0-8493-0486-5.