Multiple choice general knowledge Which scientist discovered the radioactive element radium? Isaac Newton Albert Einstein Benjamin Franklin Marie Curie Reveal answer Fill a bubble to check yourself D Correct answer Explanation Marie Curie, along with her husband Pierre Curie, discovered radium in 1898. She was a pioneer in the study of radioactivity and remains the only person to win Nobel Prizes in two different scientific fields - Physics in 1903 and Chemistry in 1911.