Kripton
36
Kr
Groep
18
Periode
4
Blok
p
Protrone
Elektrone
Neutrone
36
36
48
Algemene Eienskappe
Atoom Nommer
36
Atoommassa
83,798
Massa Nommer
84
Kategorie
Edelgasse
Kleur
Kleurloos
Radioaktief
Nee
From the Greek word kryptos, hidden
Kristalstruktuur
Gesiggesentreerde kubieke
Geskiendenis
Scottish chemist Sir William Ramsay and his assistant English chemist Morris Travers discovered krypton in 1898 in London.
They found krypton in the residue left from evaporating nearly all components of liquid air.
William Ramsay was awarded the 1904 Nobel Prize in Chemistry for discovery of a series of noble gases, including krypton.
They found krypton in the residue left from evaporating nearly all components of liquid air.
William Ramsay was awarded the 1904 Nobel Prize in Chemistry for discovery of a series of noble gases, including krypton.
Elektrone per skil
2, 8, 18, 8
Elektronkonfigurasie
[Ar] 3d10 4s2 4p6
When ionized, krypton gas emits bright white light
Fisiese Eienskappe
Fase
Gas
Digtheid
0,003733 g/cm3
Smeltpunt
115,79 K | -157,36 °C | -251,25 °F
Kookpunt
119,93 K | -153,22 °C | -243,8 °F
Heat of Fusion
1,64 kJ/mol
Heat of Vaporization
9,02 kJ/mol
Spesifieke Hitte Kapasiteit
0,248 J/g·K
Oorvloed in die aardkors
1,5×10-8%
Oorvloed in die heelal
4×10-6%
CAS Nommer
7439-90-9
PubChem CID Nommer
5416
Atomiese Eienskappe
Atoom radius
88 pm
Kovalente Radius
116 pm
Elektronegatiewiteit
3,00 (Pauling scale)
Ionisasie potensiaal
13,9996 eV
Atoom volume
38,9 cm3/mol
Termiese geleidingsvermoë
0,0000949 W/cm·K
Oksidasiestate
2
Toepassings
Krypton is used in certain photographic flash lamps for high-speed photography.
Krypton-83 has application in magnetic resonance imaging (MRI) for imaging airways.
Krypton is used as a filling gas for energy-saving fluorescent lights and as an inert filling gas in incandescent bulbs.
Krypton-83 has application in magnetic resonance imaging (MRI) for imaging airways.
Krypton is used as a filling gas for energy-saving fluorescent lights and as an inert filling gas in incandescent bulbs.
Krypton is considered to be non-toxic
Isotope
Stabiele Isotope
78Kr, 80Kr, 82Kr, 83Kr, 84Kr, 86KrOnstabiele Isotope
69Kr, 70Kr, 71Kr, 72Kr, 73Kr, 74Kr, 75Kr, 76Kr, 77Kr, 79Kr, 81Kr, 85Kr, 87Kr, 88Kr, 89Kr, 90Kr, 91Kr, 92Kr, 93Kr, 94Kr, 95Kr, 96Kr, 97Kr, 98Kr, 99Kr, 100Kr, 101Kr