Which scientist discovered the radioactive element, radium?
- AAlbert Einstein
- BBenjamin Franklin
- CIsaac Newton
- DMarie Curie
Solution & Step-by-step Explanation
Radium was discovered by Marie Sklodowska-Curie and her husband Pierre Curie in 1898. They successfully isolated it from pitchblende mineral residues, earning Marie Curie monumental recognition in radioactivity.