o Bonding MO Constructive interaction:The two 1s orbitals are in phase and have the same sign. add bonding molecular orbital represented by: a bonding MO Formation of a o bonding MO:When the 1s orbitals of two hydrogen atoms overlap in phase with each other,they interact constructively to form a bonding MO. 2013 Pearson Education,Inc. Chapter 2 5© 2013 Pearson Education, Inc. s Bonding MO Formation of a s bonding MO: When the 1s orbitals of two hydrogen atoms overlap in phase with each other, they interact constructively to form a bonding MO. Chapter 2 5