โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Astatine
  • ๐Ÿ‡จ๐Ÿ‡ณ ็ ˆ
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Astaat
  • ๐Ÿ‡ซ๐Ÿ‡ท Astate
  • ๐Ÿ‡ฉ๐Ÿ‡ช Astat
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืืกื˜ื˜ื™ืŸ
  • ๐Ÿ‡ฎ๐Ÿ‡น Astato
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใ‚ขใ‚นใ‚ฟใƒใƒณ
  • ๐Ÿ‡ต๐Ÿ‡น Astato
  • ๐Ÿ‡ท๐Ÿ‡บ ะัั‚ะฐั‚
  • ๐Ÿ‡ช๐Ÿ‡ธ Astato
  • ๐Ÿ‡ธ๐Ÿ‡ช Astat

Astatine: historical information

  • Discoveror: Dale Corson, MacKenzie, Segre
  • Place of discovery: California, USA
  • Date of discovery: 1940
  • Origin of name : from the Greek word "astatos" meaning "unstable".

Astatine ynthesized in 1940 by Dale Corson and others at the University of California, USA, by bombarding bismuth (209Bi) with α-particles.