Kadmium

48
Cd
Kumpulan
12
Kala
5
Blok
d
Proton
Elektron
Neutron
48
48
64
Ciri-Ciri Am
Nombor atom
48
Berat atom
112.411
Nombor jisim
112
Kategori
Logam peralihan
Warna
Perak
Radioaktif
Tidak
From the Latin word cadmia, Greek kadmeia - the ancient name for calamine, zinc carbonate
Struktur hablur
Hexagonal Ringkas
Sejarah
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.
Bilangan elektron per petala
2, 8, 18, 18, 2
Konfigurasi elektron
[Kr] 4d10 5s2
Cd
Cadmium is a soft metal which is easily cut with a knife
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
8.69 g/cm3
Takat lebur
594.22 K | 321.07 °C | 609.93 °F
Takat didih
1040.15 K | 767 °C | 1412.6 °F
Haba pelakuran
6.3 kJ/mol
Haba pengewapan
100 kJ/mol
Muatan haba molar
0.232 J/g·K
Banyak pada kerak bumi
0.000015%
Banyak pada alam semesta
2×10-7%
A
Kredit imej: Wikimedia Commons (Alchemist-hp)
A crystal cadmium bar made by the flux process
Nombor CAS
7440-43-9
PubChem CID Number
23973
Ciri-Ciri Atom
Jejari atom
151 pm
Jejari kovalen
144 pm
Keelektronegatifan
1.69 (Skala Pauling)
Kebolehan mengion
8.9938 eV
Isipadu atom
13.1 cm3/mol
Daya pengaliran terma
0.968 W/cm·K
Keadaan pengoksidaan
1, 2
Aplikasi
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.
Cadmium and its compounds are highly toxic
Isotop
Isotop stabil
106Cd, 108Cd, 110Cd, 111Cd, 112Cd, 114Cd
Isotop tidak stabil
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