Carbocation, a chemical species, is half an organic molecule. It has a positive carbon atom charge. CH3+ is a simple example of a carbolation. There are some carbocations that have multiple positive charges. Some can be on the same carbon atom, while others may be on a different atom. Carbocations can also be reactive intermediates in organic reaction due to their positive charge. A carbon atom has six electrons, making them unstable. Eight electrons assure stability, so they tend to search for electrons.

Depending on their chemical structure, we can divide carbocations into one of two types: classical or unorthodox. The main difference between unclassified and classical carbocations is that unclassified carbocations are composed of a single carbon atom, six electrons in three chemical bond structures, while classical carbocations contain a single carbon with six electrons in one. Unclassified carbocations however have a two-centred, two-electron structure. A methenium ion is an example of a classic carbocation, while a 2-norboryl is an example of unclassified carbocation.