โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Radium
  • ๐Ÿ‡จ๐Ÿ‡ณ ้ณ
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Radium
  • ๐Ÿ‡ซ๐Ÿ‡ท Radium
  • ๐Ÿ‡ฉ๐Ÿ‡ช Radium
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ืจื“ื™ื•ื
  • ๐Ÿ‡ฎ๐Ÿ‡น Radio
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใƒฉใ‚ธใ‚ฆใƒ 
  • ๐Ÿ‡ต๐Ÿ‡น Rádio
  • ๐Ÿ‡ท๐Ÿ‡บ ะ ะฐะดะธะน
  • ๐Ÿ‡ช๐Ÿ‡ธ Radio
  • ๐Ÿ‡ธ๐Ÿ‡ช Radium

Radium: historical information

  • Discoveror: Pierre and Marie Curie
  • Place of discovery: France
  • Date of discovery: 1898
  • Origin of name : from the Latin word "radius" meaning "ray".

Radium was discovered in 1898 by Marie and Pierre Curie in pitchblende (or uraninite) from North Bohemia. The element was isolated in 1911 by Mme. Curie and Debierne by the electrolysis of a solution of pure radium chloride, employing a mercury cathode. On distillation in an atmosphere of hydrogen this amalgam yielded the pure metal.