Radium was discovered in 1898 by Marie Curie, Pierre Curie and Gustave Bemont.
radium was not invented, it was discovered.
Radium was more or less discovered by accident while the Curies were looking for Uranium in samples of Pitchblende. In 1898, they discovered in tiny amounts, Polonium in July, and Radium in December.
marie curei
Marie Sklodowska-Curie and her husband Pierre Curie in 1898
1898
Radium: Plutonium does not occur naturally, and magnesium has a low density for a metal.
plutonium's pl
pitchblend
Radium was discovered in 1898 by Marie Curie, Pierre Curie and Gustave Bemont.
radium was not invented, it was discovered.
Plutonium was discovered at Berkeley, USA in 1940.
Plutonium was discovered on 14 December 1940 at Berkeley, USA.
Radium was discovered in Paris in 1889
Radium was more or less discovered by accident while the Curies were looking for Uranium in samples of Pitchblende. In 1898, they discovered in tiny amounts, Polonium in July, and Radium in December.
Radium was discovered in 1898 by Marie Curie, Pierre Curie and Gustave Bemont.
Uranium, Polonium, Radium, Plutonium, etc
Plutonium was discovered in 1940 by Glenn Seaborg and Edwin McMillan at Berkeley Laboratories.