When a molecule cannot pass through a conformation, it is what?
It can exist in only one of the two __ conformations shown on the left and right. These conformations are __, and they do not __. They are __, and they can be __ and __. Each of them is __, and they have __ and __.
- conformationally locked
- nonsuperimposable mirror images
- optically active
- oppsoite specific rotations