Question

pi pi star transition occure in molecule containing ?​

Answer 1

Answer:

Organic molecules and other molecules

Electrons occupying a HOMO of a sigma bond can get excited to the LUMO of that bond. This process is denoted as a σ → σ* transition. Likewise promotion of an electron from a π-bonding orbital to an antibonding π orbital* is denoted as a π → π* transition.

Answer 2

Sry but I need points