Carbokation
Carbokation, more commonly called a carbocation in English, refers to a positively charged carbon atom that typically bears only six electrons in its valence shell. The simplest representation is R3C+, a cationic center in which the carbon lacks a full octet. Carbokations are highly reactive intermediates that appear in many organic reactions, often governing the course of substitutions, eliminations, and rearrangements.
Carbokations are typically classified by the degree of substitution: primary, secondary, or tertiary. Stability generally increases
Formation of carbocations occurs in reactions that generate a cationic center, notably SN1 and E1 mechanisms,
Because carbocations are typically short-lived, their existence is inferred from reaction kinetics, product evidence, and trapping