โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Thallium
  • ๐Ÿ‡จ๐Ÿ‡ณ ้‰ˆ
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Thallium
  • ๐Ÿ‡ซ๐Ÿ‡ท Thallium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Thallium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืชืœื™ื•ื
  • ๐Ÿ‡ฎ๐Ÿ‡น Tallio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใ‚ฟใƒชใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Tálio
  • ๐Ÿ‡ท๐Ÿ‡บ ะขะฐะปะปะธะน
  • ๐Ÿ‡ช๐Ÿ‡ธ Talio
  • ๐Ÿ‡ธ๐Ÿ‡ช Tallium

Thallium: historical information

  • Discoveror: Sir William Crookes
  • Place of discovery: England
  • Date of discovery: 1861
  • Origin of name : from the Greek word "thallos" meaning "green twig" or green shoot.

Thallium was discovered spectroscopically in 1861 by Crookes. The element was named after the green spectral line, which identified the element (Greek "thallos", green twig). The metal was isolated both by Crookes and Lamy in 1862. They had been expecting to isolate tellurium after removing selenium from the byproducts from a commercial sulphuric acid factory but instead foundthe new element thallium.