An organic ion that has a carbon atom carrying a negative charge is known as a carbanion. An organic ion that has a carbon atom carrying a positive charge is known as a carbocation. The reaction of aqueous sodium hydroxide with 1-bromobutane follows an $\text{S}_\text{N}2$ mechanism. What happens first in the mechanism?
- Aattack by a nucleophile on a carbon atom with a partial positive charge
- Bheterolytic bond fission followed by attack by an electrophile on a carbanion
- Cheterolytic bond fission followed by attack by a nucleophile on a carbocation
- Dhomolytic bond fission followed by attack by a nucleophile on a carbocation