Robert S. Mulliken

Robert S. Mulliken was an influential American chemist known for his work in physical and theoretical chemistry, particularly regarding atomic and molecular structures. He developed the concept of molecular orbitals, which describe how electrons are distributed in molecules, helping to explain chemical bonding and properties. Mulliken's work on electron configuration improved our understanding of how electrons are arranged around atoms, informing many aspects of chemistry. For his significant contributions, he was awarded the Nobel Prize in Chemistry in 1966. His research laid the groundwork for much of modern quantum chemistry and molecular physics.