Krypton

Krypton, ₃₆Kr

A krypton-filled discharge tube glowing white
Krypton
Pípè	/ˈkrɪptɒn/ ​(KRIP-ton)
Ìhànsójú	colorless gas with whitish emission
Ìwúwo átọ̀mù Ar, std(Kr)	83.798(2)
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 bromine ← krypton → rubidium
Nọ́mbà átọ̀mù (Z)	36
Ẹgbẹ́	group 18 (noble gases)
Àyè	àyè 4
Àdìpọ̀	Àdìpọ̀-p
Ẹ̀ka ẹ́límẹ́ntì	Ẹ̀fúùfù abíire
Ìtò ẹ̀lẹ́ktrọ́nù	[Ar] 3d10 4s2 4p6
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 18, 8
Àwọn ohun ìní ara
Ìfarahàn at STP	gas
Ìgbà ìyọ́	115.79 K ​(-157.36 °C, ​-251.25 °F)
Ígbà ìhó	119.93 K ​(-153.22 °C, ​-244.12 °F)
Kíki (at STP)	3.749 g/L
Triple point	115.775 K, ​73.2 kPa
Critical point	209.41 K, 5.50 MPa
Heat of fusion	1.64 kJ/mol
Heat of	9.08 kJ/mol
Molar heat capacity	20.786 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 states	0, +1, +2 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 3.00
Covalent radius	116±4 pm
Van der Waals radius	202 pm
Color lines in a spectral range Spectral lines of krypton
Other properties
Natural occurrence	primordial
Crystal structure	​(fcc)
Speed of sound	(gas, 23 °C) 220, (liquid) 1120 m/s
Thermal conductivity	9.43x10-3  W/(m·K)
Magnetic ordering	diamagnetic
CAS Number	7439-90-9
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