Svojstva

CAS broj7440-43-9
PubChem CID23973
Atomski radijus151
Atomski volumen13,1
Relativna atomska masa112,411
Blokd
Vrelište767
Modul stišljivosti
KategorijaPrijelazni metali
Kristalna strukturaJednostavna heksagonska
BojaSrebrna
Kovalentni radijus144
Gustoća8,69
Električna otpornost
Elektronska konfiguracija[Kr] 4d10 5s2
Elektrona po ljusci2, 8, 18, 18, 2
Elektronegativnost1,69
Elektroni48
Skupina12
Toplina taljenja6,3
Toplina isparavanja100
Potencijal ionizacije8,994
Magnetsko redanje
Magnetska osjetljivost
Masa112,411
Maseni broj48
Talište321,07
NazivKadmij
Neutroni64
Atomski broj112
Stanja oksidacije1, 2
Perioda5
Agregacijsko stanjeČvrsto
Poissonov omjer
Protoni48
Modul smicanja
Specifični toplinski kapacitet0,232
SimbolCd
Toplinska vodljivost0,968
Van der Waalsov radijus
Youngov modul
Obilnost
Zastupljenost u Zemljinoj kori0.000015%
Zastupljenost u svemiru2×10-7%
Cd Kadmij 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
Škotski kemičar sir William Ramsay i njegov pomoćnik, engleski kemičar Morris Travers otkrili su kripton 1898. u Londonu.

Pronašli su kripton u ostatku preostalom nakon isparavanja gotovo svih sastojaka tekućeg zraka.

William Ramsay je dobio Nobelovu nagradu za kemiju 1904. za otkriće niza plemenitih plinova, uključujući kripton. Od grčke riječi kryptos, skriven 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)

Stabilni izotopi

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

Nestabilni izotopi

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.