Question

what is rearrangement of carbonation

Answer 1

rearrangement will occur if a secondary carbocation can be formed from a primary carbocation because a secondary carbocation is more stable than the primary carbocation. There can be two types of rearrangements. Shift of an alkyl group is called a 1,2-alkyl shift.

Answer 2

Carbocations rearrangement is a phenomenon consisting in the riorganization of the structure of a molecule that allows to obtain a carbocation more stabilized.