1 By Cupcake87 1772 Joseph Priestley and Antoine Lavoisier - oxygen 1778 Humphry Davy - nitrous oxide (anesthesia), Barium, Calcium, Magnesium, Strontium 1898 Marie Curie - atom 1935 China Clipper 1941 Glenn Seaborg -Plutonium 1945 Oliver Sacks - Neurologist