Vlastnosti

CAS Number7440-43-9
PubChem CID23973
Atomový poloměr151
Molární objem13,1
Atomová hmotnost112,411
Blokd
Teplota varu767
Bulk Modulus
KategoriePřechodné kovy
Krystalografická soustavaHexagonální
BarvaStříbrná
Kovalentní poloměr144
Hustota8,69
Electrical Resistivity
Elektronová konfigurace[Kr] 4d10 5s2
Elektronů v obalu2, 8, 18, 18, 2
Elektronegativita1,69
Electrons48
Skupina12
Skupenské teplo tání6,3
Skupenské teplo varu100
Ionizační potenciál8,994
Magnetic Ordering
Magnetic Susceptibility
Hmotnost112,411
Mass Number48
Teplota tání321,07
NázevKadmium
Neutrony64
Atomové číslo112
Oxidační čísla1, 2
Perioda5
SkupenstvíPevná
Poisson Ratio
Protony48
Shear Modulus
Měrná tepelná kapacita0,232
ZnačkaCd
Tepelná vodivost0,968
Van der Waals radius
Young's Modulus
Hojnost
Hojnost v zemské kůře0.000015%
Hojnost ve vesmíru2×10-7%
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. From the Greek word kryptos, hidden 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.

Izotopy kryptonu

Standard Atomic Weight

112.414(4)

Stabilní izotopy

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

Nestabilní izotopy

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 je považován ze netoxický
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.