Gilbert Newton Lewis — American Scientist born on October 23, 1875, died on March 23, 1946
Gilbert Newton Lewis ForMemRS was an American physical chemist known for the discovery of the covalent bond and his concept of electron pairs; his Lewis dot structures and other contributions to valence bond theory have shaped modern theories of chemical bonding. Lewis successfully contributed to thermodynamics, photochemistry, and isotope separation, and is also known for his concept of acids and bases... (wikipedia)