He was
American physical chemist, known for the discovery of bond. He is also known
for Lewis dot structures of molecules. In 1916, he published his paper on ‘
Chemical bonding ‘ in which he proposed the idea of formation of covalent bond
by sharing a pair of electrons between two atoms. In 1919 by studying the
magnetic properties of solutions of oxygen in liquid nitrogen he proved that O4 molecules exist in
liquid nitrogen. This was the first proof for the existence pf tetratomic
oxygen.
In 1921 he showed that the law of mass
action is not obeyed by many strong electrolytes because of complete
dissociation of the electrolytes. In 1923, he proposed his well known theory of
acids and bases . he defined base as a substance that can donate a pair of
electrons to another substance. The donated pair electrons is used to complete
octet of electrons in the acceptor molecule. In 1923 he introduced the term photon for the smallest
unit of radiant energy. In 1933, he produced pure sample of deu
terium oxide,
heavy water.