Krypton

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Krypton, 36Kr
Krypton-glow.jpg
A krypton-filled discharge tube glowing white
Krypton
Pípè /ˈkrɪptɒn/ (KRIP-ton)
Ìhànsójúcolorless gas with whitish emission
Ìwúwo átọ̀mù Ar, std(Kr)83.798(2)[1]
Krypton ní orí tábìlì àyè
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 Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver 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 Gold Mercury (element) Thallium Lead 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 Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
Ar

Kr

Xe
brominekryptonrubidium
Nọ́mbà átọ̀mù (Z)36
Ẹgbẹ́group 18 (noble gases)
Àyèàyè 4
Àdìpọ̀Àdìpọ̀-p
Ẹ̀ka ẹ́límẹ́ntì  Ẹ̀fúùfù abíire
Ìtò ẹ̀lẹ́ktrọ́nù[Ar] 3d10 4s2 4p6
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 18, 8
Àwọn ohun ìní ara
Ìfarahàn at STPgas
Ìgbà ìyọ́115.79 K ​(-157.36 °C, ​-251.25 °F)
Ígbà ìhó119.93 K ​(-153.22 °C, ​-244.12 °F)
Kíki (at STP)3.749 g/L
Triple point115.775 K, ​73.2 kPa [2]
Critical point209.41 K, 5.50 MPa
Heat of fusion1.64 kJ/mol
Heat of 9.08 kJ/mol
Molar heat capacity20.786 J/(mol·K)
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 59 65 74 120    
Atomic properties
Oxidation states0, +1, +2 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
ElectronegativityPauling scale: 3.00
Covalent radius116±4 pm
Van der Waals radius202 pm
Color lines in a spectral range
Spectral lines of krypton
Other properties
Natural occurrenceprimordial
Crystal structure ​(fcc)
Cubic face-centered crystal structure for krypton
Speed of sound(gas, 23 °C) 220, (liquid) 1120 m/s
Thermal conductivity9.43x10-3  W/(m·K)
Magnetic orderingdiamagnetic[3]
CAS Number7439-90-9
Main isotopes of krypton
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
78Kr 0.35% 78Kr is stable with 42 neutrons
79Kr syn 35.04 h ε - 79Br
β+ 0.604 79Br
γ 0.26, 0.39, 0.60 -
80Kr 2.25% 80Kr is stable with 44 neutrons
81Kr trace 2.29×105 y ε - 81Br
γ 0.281 -
82Kr 11.6% 82Kr is stable with 46 neutrons
83Kr 11.5% 83Kr is stable with 47 neutrons
84Kr 57% 84Kr is stable with 48 neutrons
85Kr syn 10.756 y β 0.687 85Rb
86Kr 17.3% 86Kr is stable with 50 neutrons
Àdàkọ:Category-inline
| references

Kryptọ̀nù?

Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. Meija, Juris; Coplen, Tyler B.; Berglund, Michael; Brand, Willi A.; De Bièvre, Paul; Gröning, Manfred; Holden, Norman E.; Irrgeher, Johanna 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. "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 edition ed.). Boca Raton, Florida: CRC Press. 2005. 
  3. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.