Eigenschaften

CAS-Nummer7440-43-9
PubChem CID23973
Atomradius151
Molares Volumen13,1
Atommasse112,411
Blockd
Siedepunkt767
Bulk Modulus
KategorieÜbergangsmetalle
KristallstrukturEinfach hexagonal
FarbeSilber
Kovalenter Radius144
Dichte8,69
Electrical Resistivity
Elektronenkonfiguration[Kr] 4d10 5s2
Elektronen pro Schale2, 8, 18, 18, 2
Elektronegativität1,69
Elektronen48
Gruppe12
Schmelzwärme6,3
Verdampfungswärme100
Ionisierungsenergie8,994
Magnetic Ordering
Magnetic Susceptibility
Masse112,411
Massenzahl48
Schmelzpunkt321,07
NameKadmium
Neutronen64
Ordnungszahl112
Oxidationszustände1, 2
Periode5
AggregatzustandFest
Poisson Ratio
Protonen48
Shear Modulus
Spezifische Wärmekapazität0,232
ElementsymbolCd
Wärmeleitfähigkeit0,968
Van der Waals Radius
Young's Modulus
Häufigkeit
Häufigkeit in der Erdkruste0.000015%
Häufigkeit im Universum2×10-7%
Cd Kadmium 48 112.411 12 5 d 48 320.9 765.0 [Kr] 4d10 5s2 2 8 18 18 2 8.65 0.000015% Silver Hexagonal 1.7 1.52 {"1":"867.8","2":"1631.4","3":"3616"} 868 0 148 2 1.71 13.1 6.07 99.87 0.233 96.8 0 Solid, Diamagnetic, Conductor, TransitionMetal, Metal, Stable, Natural KAD-me-em Soft, malleable, blue-white metal. Used in nickel-cadmium batteries. Also in electroplating steel and in the manufacture of berings. Its compounds are found in paint pigments and a wide variety of intense colors. Boiling cadmium gives off a weird, yellow-colored vapor that is poisonous. Obtained as a by product of zinc refining. boRius1DYdQ Cadmium
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. Aus dem Griechischen kryptos (versteckt) 48 1817 Friedrich Strohmeyer Germany Somewhat confusingly, from the Latin word "cadmia" meaning "calamine" (zinc carbonate, ZnCO3) and from the Greek word "kadmeia" with the same meaning.

Isotopes of Krypton

Standard Atomic Weight

112.414(4)

Stabile Isotope

106Cd 108Cd 110Cd 111Cd 112Cd 113Cd 114Cd 116Cd

Instabile Isotope

95Cd 96Cd 97Cd 98Cd 99Cd 100Cd 101Cd 102Cd 103Cd 104Cd 105Cd 107Cd 109Cd 115Cd 117Cd 118Cd 119Cd 120Cd 121Cd 122Cd 123Cd 124Cd 125Cd 126Cd 127Cd 128Cd 129Cd 130Cd 131Cd 132Cd

Krypton is considered to be non-toxic
When ionized, krypton gas emits bright white light
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.