Which of the following statements explain why aryl halides and vinyl halidesdo not undergo nucleophilic substitution by either the SN1 or SN2 mechanism?
A) They don't undergo SN1 reactions because a higher percents-character makes the bond longer and stronger.
B) They don't undergo SN1 reactions because the carbocation is highly electronegative.
C) They don't undergo SN2 reactions because a higher percents-character makes the bond shorter and stronger.
D) They don't undergo SN2 reactions because heterolysis of the C-X bond forms a highly unstable carbocation.
Correct Answer:
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