o*Antibonding MO Destructive interaction:The two Is orbitals are out of phase. antibonding molecular orbital represented by: node r本antibonding MO Copyright2010 Pearson Prentice Hall,Inc. Formation of a o*antibonding MO:When two 1s orbitals overlap out of phase,they interact destructively to form an antibonding MO. Chapter 2 6 Chapter 2 6 s* Antibonding MO Formation of a s* antibonding MO: When two 1s orbitals overlap out of phase, they interact destructively to form an antibonding MO