In operant conditioning, negative reinforcement is followed by a desirable stimulus. has hardly anything to do with "good" and "bad" behavior. is always followed by something unpleasant. decreases the likelihood that a behavior will occur.

In operant conditioning, negative reinforcement "has hardly anything to do with "good" and "bad" behavior."

Negative reinforcement happens when a specific stilmulus is expelled after a specific behavior is displayed. The probability of the specific conduct happening again later on is expanded as a result of expelling/keeping away from the negative outcome. 
Negative reinforcement ought not be thought of as a discipline technique. With negative reinforcement , you are expanding a conduct, while with discipline, you are diminishing a conduct.

Ifound the exercise on the internet. attached is the list mentioned above.in order for a compound to be considered optically active it can't have any axis or plan of symmetry. the molecule  shouldn't also  be superimposable on its mirror image.with such considerations, the compounds that are optically active are: -third compound on the first image is optically active; -second and third compound from the second image are optically actives.