8. D:
1 by using the two electons of the π bond to
the carbon atoms ⇒ leaves a vacant p orbital and a +
ion of a carbocation and a halide ion:
1B THE MECHANISM OF THE ADDITION OF HX TO A DOUBLE BON
. The H+ of HX reacts with the alkene
form a σ bond to one of
charge on the other carbon ⇒ format
2. The carbocation is highly reactive and combines with the halide ion:
8.1C ELECTROPHILES ARE LEWIS ACIDS:
ewis acids.
- Nucleophiles: molecules or ions that can furnish an electron pair ⇒ Lewis bases.
- Any reaction of an electrophile also involves a nucleophile.
- In the protonation of an alkene:
- The electrophile is the proton donated by an acid.
- The nucleophile is the alkene.
- Electrophiles: molecules or ions that can accept an electron pair ⇒ L