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Кадмий

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Акриловый кубик 25 мм. Кадмий (Cd). Cd acrylic cube 25x25x25 mm. Articul: ac48
1 500,00 ₽
Брелок 20х30 мм. Кадмий. Cd Keyring 20x30 mm. Articul: pt48
600,00 ₽
Брелок. Кадмий. Trinket. Cadmium. Articul: 4887120420
550,00 ₽
Cadmium (Cd), 99.98%, 5 gr. - in a glass jar. Articul: 4852110518
250,00 ₽
Кулон. Кадмий. Pendant. Cadmium. Articul: 4818120320
790,00 ₽
Пуговица 18 мм. Кадмий. Cd. Chemical button 18 mm. Articul: but48
340,00 ₽
Кадмий

 
Atomic number     48
Atomic mass     112,41
Density, kg / m?   8650
Temperature
melting, ° С       320.9
 
Cadmium is a soft malleable ductile transition metal of a silvery-white color. It is stable in dry air; in humid air, an oxide film forms on its surface, which prevents further oxidation of the metal. In 1817, the German chemist F. Stromeyer, during an audit of one of the pharmacies, discovered that the zinc carbonate there contained an admixture of an unknown metal, which was precipitated in the form of yellow sulfide by hydrogen sulfide from an acidic solution. Stromeyer called the metal he discovered cadmium (from the Greek kadmeia - impure zinc oxide, also zinc ore). Independently of him, German scientists K. Hermann, K. Carsten and W. Meissner discovered Cadmium in Silesian zinc ores in 1818.

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