Devolution is the. a. passing of authority from the national government to the state and local levels. b. expansion of national authority that began in the 1930s. c. contraction of state authority and the expansion of local government authority.
Hello, There you go. The French chemist Paul-Emile Lecoq de Boisbaudran (1838â1912), who discovered it in 1875. Gallium (Latin Gallia meaning Gaul; also gallus, meaning rooster) was discovered spectroscopically by Lecoq de Boisbaudran in 1875 by its characteristic spectrum (two violet lines) in an examination of a zinc blende from the Pyrenees.
The 1789 discovery of uranium in the mineral pitchblende is credited to Martin Heinrich Klaproth, who named the new element after the planet Uranus. EugÃ¨ne-Melchior PÃ©ligot was the first person to isolate the metal and its radioactive properties were discovered in 1896 by Henri Becquerel.