Organic Chemistry Practice Problems The CHM 7 Practice Problems Solution: If we compare the sizes of the halogens, we find t...

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Solution: If we compare the sizes of the halogens, we find that they increase in size from fluorine to iodine. Nevertheless, fluoroethane, chloroethane, bromoethane, and iodoethane all have very similar barriers to rotation about the C—C bond. Can you offer a possible explanation?

Problem

If we compare the sizes of the halogens, we find that they increase in size from fluorine to iodine. Nevertheless, fluoroethane, chloroethane, bromoethane, and iodoethane all have very similar barriers to rotation about the C—C bond. Can you offer a possible explanation?