Young Maiden: "Yes, I've been asked many times to get married."
Friend: "Really, who's asked you?"
Young Maiden: "My mother and father."
Gilbert Newton LewisBorn 23 Oct 1875; died 23 Mar 1946 at age 70. American chemist who collaborated with Irving Langmuir in developing an atomic theory. He developed a theory of valency, which introduced the covalent bond (c. 1916), whereby a chemical combination is made between two atoms by the sharing of a pair of electrons, one contributed from each atom. This was part of his more general octet theory, published in Valence and the Structure of Atoms and Molecules (1923). Lewis visualized the electrons in an atom as being arranged in concentric cubes. The sharing of these electrons he illustrated in the Lewis dot diagrams familiar to chemistry students. He generalized the concept of acids and bases now known as Lewis acids and Lewis bases.« |
