Kadmium
48
Cd
Groep
12
Periode
5
Blok
d
Protrone
Elektrone
Neutrone
48
48
64
Algemene Eienskappe
Atoom Nommer
48
Atoommassa
112,411
Massa Nommer
112
Kategorie
Oorgangsmetale
Kleur
Silver
Radioaktief
Nee
From the Latin word cadmia, Greek kadmeia - the ancient name for calamine, zinc carbonate
Kristalstruktuur
Eenvoudige seshoekige
Geskiendenis
Cadmium was discovered by German chemist Friedrich Stromeyer in 1817 as an impurity in zinc carbonate.
Stromeyer noted that some impure samples of calamine (zinc carbonate) changed color when heated but pure calamine did not.
Cadmium was independently discovered by German chemist Karl Hermann in 1818.
Stromeyer noted that some impure samples of calamine (zinc carbonate) changed color when heated but pure calamine did not.
Cadmium was independently discovered by German chemist Karl Hermann in 1818.
Elektrone per skil
2, 8, 18, 18, 2
Elektronkonfigurasie
[Kr] 4d10 5s2
Cadmium is a soft metal which is easily cut with a knife
Fisiese Eienskappe
Fase
Soliede
Digtheid
8,69 g/cm3
Smeltpunt
594,22 K | 321,07 °C | 609,93 °F
Kookpunt
1040,15 K | 767 °C | 1412,6 °F
Heat of Fusion
6,3 kJ/mol
Heat of Vaporization
100 kJ/mol
Spesifieke Hitte Kapasiteit
0,232 J/g·K
Oorvloed in die aardkors
0,000015%
Oorvloed in die heelal
2×10-7%
CAS Nommer
7440-43-9
PubChem CID Nommer
23973
Atomiese Eienskappe
Atoom radius
151 pm
Kovalente Radius
144 pm
Elektronegatiewiteit
1,69 (Pauling scale)
Ionisasie potensiaal
8,9938 eV
Atoom volume
13,1 cm3/mol
Termiese geleidingsvermoë
0,968 W/cm·K
Oksidasiestate
1, 2
Toepassings
Cadmium is a key component in battery production.
It is also is used in electroplating.
Cadmium oxide is used in black and white television phosphors and in the blue and green phosphors for color television picture tubes.
Cadmium is used as a barrier to control neutrons in nuclear fission.
It is also is used in electroplating.
Cadmium oxide is used in black and white television phosphors and in the blue and green phosphors for color television picture tubes.
Cadmium is used as a barrier to control neutrons in nuclear fission.
Cadmium and its compounds are highly toxic
Isotope
Stabiele Isotope
106Cd, 108Cd, 110Cd, 111Cd, 112Cd, 114CdOnstabiele Isotope
95Cd, 96Cd, 97Cd, 98Cd, 99Cd, 100Cd, 101Cd, 102Cd, 103Cd, 104Cd, 105Cd, 107Cd, 109Cd, 113Cd, 115Cd, 116Cd, 117Cd, 118Cd, 119Cd, 120Cd, 121Cd, 122Cd, 123Cd, 124Cd, 125Cd, 126Cd, 127Cd, 128Cd, 129Cd, 130Cd, 131Cd, 132Cd