Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides. Typical nonmetals have a dull, coloured or colourless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides.
(1860-1948).At the age of 56, John J. Pershing became the commander of the American Expeditionary Force that helped to turn the tide in favor of the Allies and against the Central Powers during World War I. For his leadership during the war, he was promoted to the rank of general of the armies.
oseph Stalin lead Russia throughout World War Two and up to his death in 1953. Joseph Stalin was leader of Russia when Hitler launched Operation Barbarossa in June 1941 and saw his nation survive the battles fought at Moscow and Leningrad and oversaw a vital victory at the Battle of Stalingrad in 1942/43.