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.
The character moved to Adventure Comics in 1946, and his own title, Superboy, launched in 1949. The 1950s saw the launching of Superman's Pal Jimmy Olsen (1954) and Superman's Girlfriend Lois Lane (1958). By 1974 these titles had merged into Superman Family, although the series was cancelled in 1982.