Radium

Marie Skłodowska Curie (/ˈkjʊəri/ KEWR-ee, French:[kyʁi], Polish:[kʲiˈri]), born Maria Salomea Skłodowska (Polish:[ˈmarja salɔˈmɛa skwɔˈdɔfska]; 7 November 1867 – 4 July…