Answer to Question #63659 in Chemistry for Qwerty

Question

What is Sp2 hybridization? What is a nucleophile? Why we show a circle inside a benzene ring instead of double bonds?

Answer 1

SP2-hybridization is the process of intermixing of one S and two P orbitals to give three identical hybrid orbitals is known as Sp2 or trigonal hybridization.
Nucleophile is a chemical species that donates an electron pair to an electrophile to form a chemical bond in relation to a reaction.
The circle drawing inside a benzene ring insteade of double bounds can be considered to be more accurate. Electrons forming double bonds in the standard Lewis dot structure are actually delocalized. We show that delocalization using the concept of resonance structures. But even resonance structures do not necessarily accurately represent the bonding in a molecule.
Since those 6 electrons that form 3 double bonds are delocalized, we draw a circle representing all the places they could be: a giant molecular orbital that comes from a combination of all the p-z orbitals on the carbons.