Kazimierz Fajans was a Polish physical chemist, a pioneer in the science of radioactivity and the co-discoverer of chemical element protactinium. He was four times nominated for the Nobel Prize—three
Kazimierz Fajans
Fajans at the Bunsen Congress, Munich, 1928. Pictured with Peter Debye, Fritz London, Friedrich Hund, Alwin Mittasch, and Oskar von Miller
In inorganic chemistry, Fajans' rules, formulated by Kazimierz Fajans in 1923, are used to predict whether a chemical bond will be covalent or ionic, and depend on the charge on the cation and the rel
Kazimierz Fajans
…strength and deformation of ions and particles, such as heat of ion hydration, refractive index and the heat of sublimation. In 1923, he formulated Fajans' rules of inorganic chemistry, which are used to predict whether a chemical bond will be covalent or ionic. In the United States he researched nuclear reactions…