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Cd (Cadmium)

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Keterangan

     While cadmium is toxic, fatal poisonings rarely occur because of its emetic action, which means little is absorbed.

Nama lain (trademark, branding etc.)

Cadmium, Kadmij, Cadmium - s, Cadmio, Kadmium, Кадмий, 

Spesifikasi Produk

Overview of Cadmium
Atomic Number 48
Group 12
Period 5
Series Transition Metals
Relative Atomic Mass (12C=12.000)  112.41
Boiling Point 1038K 765°C 1409°F
Melting Point 594.33K 321.18°C 610.12°F
Density/kg m-3  8650 (293K)
Ground State Electron Configuration  [Kr]4d105s2
Electron Affinity(M-M-)/kJ mol-1  26
Discoverer Fredrich Stromeyer
Discovery Location Göttingen Germany
Discovery Year 1817
Name Origin Greek: kadmeia (ancient name for calamine (ZnCO3)); Latin: cadmia.

Aplikasi

     Cadmium is used extensively in electroplating, which accounts for about 60% of its use. It is also used in many types of solder, for standard e.m.f. cells, for nickel-cadmium batteries and in rods to control atomic fission. It is a component of some of the lowest melting alloys, alloys with low coefficients of friction, and alloys with great resistance to fatigue. Cadmium compounds are used in blue and green phosphors in colour television sets. Cadmium forms a number of compounds, the sulfide being used as an artist's pigment as it is bright yellow.

Bahan Baku

Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Like zinc, it prefers oxidation state +2 in most of its compounds and like mercury it shows a low melting point compared to transition metals. Cadmium and its congeners are not always considered transition metals, in that they do not have partly filled d or f electron shells in the elemental or common oxidation states. The average concentration of cadmium in the Earth's crust is between 0.1 and 0.5 parts per million (ppm). It was discovered in 1817 simultaneously by Stromeyer and Hermann, both in Germany, as an impurity in zinc carbonate.

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