Alkyl hydrogen atoms bonded to a carbon atom in a a (alpha) position relative to a carbonyl group display unusually high acidity.While the pK a values for alkyl C-H bonds is typically on the order of 40-50, pK a values for these alpha hydrogens is usually within the range of 19-20.lkyl hydrogen atoms bonded to a carbon atom in a a (alpha) position relative to a carbonyl group display unusually high acidity.
Adventures of Superman was the first television series featuring the comic book superhero Superman. The series, which was syndicated rather than being tied to a network, began filming in 1951, and was first aired on September 19, 1952. The final first-run episode was broadcast on April 28, 1958.
Origins. The first Superman character created by Jerry Siegel and Joe Shuster was not a hero, but a villain. Their short story The Reign of the Superman concerned a bald-headed villain bent on dominating the world.The story did not sell, forcing the two to reposition their character on the right side of the law.he revised Superman first appeared in Action Comics #1, June 1938. Siegel and Shuster sold the rights to the company for $130 and a contract to supply the publisher with material. The Saturday Evening Post reported in 1941 that the pair was being paid still a fraction of DC's Superman profits.