โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Selenium
  • ๐Ÿ‡จ๐Ÿ‡ณ ็ก’
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Selenium
  • ๐Ÿ‡ซ๐Ÿ‡ท Sélénium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Selen
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืกืœื ื™ื•ื
  • ๐Ÿ‡ฎ๐Ÿ‡น Selenio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใ‚ปใƒฌใƒณ
  • ๐Ÿ‡ต๐Ÿ‡น Selênio
  • ๐Ÿ‡ท๐Ÿ‡บ ะกะตะปะตะฝ
  • ๐Ÿ‡ช๐Ÿ‡ธ Selenio
  • ๐Ÿ‡ธ๐Ÿ‡ช Selen

Selenium: historical information

  • Discoveror: Jöns Berzelius
  • Place of discovery: Sweden
  • Date of discovery: 1817
  • Origin of name : from the Greek word "selene" meaning "moon".

Selenium (Gr. Selen, moon) was discovered by Jöns Jacob Berzelius in 1817. He reported that tellurium was present in sulphuric acid from a Swedish factory, but in the following year decided that the impurity was not tellurium but another closely related element that he subsequently identified as selenium.