Beginning of Essay
William Gregor discovered unknowingly in 1791. When he discovered it, he was analyzing a certain hard, black, sandy material he found in his neighborhood. At the time he had no clue that what he had found was going to be named . Allen Hunter did not make the pure ....

Middle of Essay
.... radioactive after being bombarded with neutrons. The emitted radiations are mostly positrons and gamma rays. The hexagonal alpha form changes to the cubic beta form very slowly at around 880 degrees Celsius. The metal combines with oxygen at red heat, and with chorine at 550 degrees Celsius. when a metal, is considered to be physiologically inert. Pure dioxide is kind of clear and has an extremely high index of refraction with an optical dispersion higher then diamond. The location of on the Periodic Chart is in the series of sub groups called transition elements. Other then the fact that transition elements are metals, there is not a single prop ....