Chemical elements are discovered, not invented.
Pierre and Marie Curie worked approx. one year for these discoveries.
In July 1898 Pierre and Marie Currie published a paper revealing their discovery of "polonium", In December 1898 announced a second new element, "radium"
Marie Curie and her husband Pierre Curie discovered the elements radium and polonium in 1898 through their work on radioactivity. They were awarded the Nobel Prize in Physics for their discoveries in 1903.
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.
Marie Curie discovered the elements polonium and radium.
Marie Skłodowska Curie and her husband Pierre discovered the elements polonium and radium in 1898, and named polonium for her native country Poland.
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.The word "invented" is not adequate.
In July 1898 Pierre and Marie Currie published a paper revealing their discovery of "polonium", In December 1898 announced a second new element, "radium"
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.
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.
Marie Curie and her husband Pierre Curie discovered the elements radium and polonium in 1898 through their work on radioactivity. They were awarded the Nobel Prize in Physics for their discoveries in 1903.
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.
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.
Marie Curie discovered the elements polonium and radium.
Polonium and was discovered in 1898 by Pierre Curie and Marie Curie.
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.
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.
For radium and polonium the word "invented" is not correct; you must use "discovered".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.