nothing
Radium was discovered in 1898 !
Radium was discovered in 1898 by Marie Curie, Pierre Curie and Gustave Bemont.
radium was not invented, it was discovered.
Marie Curie
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 Paris in 1889
Radium was discovered in 1898 by Marie Curie, Pierre Curie and Gustave Bemont.
Radium was discovered in 1898 by Marie Curie, Pierre Curie and Gustave Bemont.
Radium was discovered by Marie Curie, Pierre Curie and Gustave Bemont in 1898 at Paris (France).
marie curei
Radium was discovered by Marie Curie, Pierre Curie and Gustave Bemont in 1898.
Polonium was discovered by Marie Curie and Pierre Curie in 1898. Radium was discovered by Marie Curie, Pierre Curie and G. Bemont also in 1898. Studying residues of uranium ores Marie Curie and Pierre Curie found that these residues are more radioactive than uranium; they attributed this radioactivity to unknown elements. They isolated these elements and named these elements polonium and radium.