(a) Ball-and-stick models of 5 conformations of butane are shown below. Rank them in order of decreasing steric energy, or from least stable to most stable. (Enter only letters and the symbol >, for example A>B>C>D>E.)
(No Response)

(b) Space-filling models for the same 5 conformations of butane are shown below, but in a different order than that above. Rank them in order of decreasing steric energy, or from least stable to most stable. (Enter only letters and the symbol >, for example A>B>C>D>E.)
(No Response)
