โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Cadmium
  • ๐Ÿ‡จ๐Ÿ‡ณ ้Ž˜
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Cadmium
  • ๐Ÿ‡ซ๐Ÿ‡ท Cadmium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Cadmium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืงื“ืžื™ื•ื
  • ๐Ÿ‡ฎ๐Ÿ‡น Cadmio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใ‚ซใƒ‰ใƒŸใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Cádmio
  • ๐Ÿ‡ท๐Ÿ‡บ ะšะฐะดะผะธะน
  • ๐Ÿ‡ช๐Ÿ‡ธ Cadmio
  • ๐Ÿ‡ธ๐Ÿ‡ช Kadmium

Cadmium: historical information

  • Discoveror: Friedrich Strohmeyer
  • Place of discovery: Germany
  • Date of discovery: 1817
  • Origin of name : somewhat confusingly, from the Latin word "cadmia" meaning "calamine" (zinc carbonate, ZnCO3) and from the Greek word "kadmeia" with the same meaning..

Cadmium was discovered by Friedrich Stromeyer in 1817 from an impurity in some samples pf zinc carbonate, ZnCO3. He noted that these particular samples changed colour on heating, which pure zinc carbonate does not. He was persistent enough to follow this observation through and he eventually isolated some cadmium metal by roasting and reduction of the sulphide.