โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Actinium
  • ๐Ÿ‡จ๐Ÿ‡ณ ้Œ’
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Actinium
  • ๐Ÿ‡ซ๐Ÿ‡ท Actinium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Actinium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืืงื˜ื™ื ื™ื•ื
  • ๐Ÿ‡ฎ๐Ÿ‡น Attinio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใ‚ขใ‚ฏใƒใƒ‹ใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Actínio
  • ๐Ÿ‡ท๐Ÿ‡บ ะะบั‚ะธะฝะธะน
  • ๐Ÿ‡ช๐Ÿ‡ธ Actinio
  • ๐Ÿ‡ธ๐Ÿ‡ช Aktinium

Actinium: historical information

  • Discoveror: Andre Debierne
  • Place of discovery: France
  • Date of discovery: 1899
  • Origin of name : from the Greek word "aktinos" meaning "ray".

Actinium was discovered by Andre Debierne in 1899 and independently by F. Giesel in 1902, both of whom obtained it while working on separation techniques for rare earth oxides.