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.
Superman was relaunched by writer & artist John Byrne, initially in the limited series The Man of Steel (1986). 1986 also saw the cancellation of World's Finest Comics, and the Superman title renamed Adventures of Superman. A second volume of Superman was launched in 1987, running until cancellation in 2006. This cancellation saw Adventures of Superman revert to the Superman title.