Multiple choice general knowledge science & technology 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 and isolated radium in 1898. She received the 1903 Nobel Prize in Physics for this work on radioactivity and the 1911 Nobel Prize in Chemistry for radium discovery.