1876
Chemical elements are not invented; they are discovered or prepared.Polonium was discovered (not invented) by Marie Curie and Pierre Curie in 1898.
Marie Curie did not invent radium and polonium; she discovered them. It took several years of intense research for Curie, along with her husband Pierre Curie, to isolate and identify these radioactive elements in 1898.
Polonium was discovered by Marie Curie and Pierre Curie in 1898.
Marie Sklodowska-Curie and her husband Pierre Curie in 1898
Marie Curie's first child was named Irene, she was born on September in 1897
Polonium and was discovered in 1898 by Pierre Curie and Marie Curie.
Marie Curie made her discovery of the element radium in 1898.
Marie Curie received the Nobel in 1903 and again in 1911.
Marie Curie
Polonium was discovered in 1898 by Pierre Curie and Marie Curie, in a Paris laboratory.
Bequerel was the first to note radioactivity, in 1896. Curie discovered radium in 1898, after experiments with uranium and then pitchblende.
In 1898