new diagram must be devised for each molecule, Figure 9.43, where 2P- is the valence electron from F and 1s- is the V.E. from hydrogen.
“s“ level is lower in energy than 2P and 1s, this is the driving force for bond for motion.
Electron will not share equally, and can be related to electro nativity and give polar bond.
9.4 Bonding in Heteronuclear Diatomic
Molecules
2. very different atoms, e.g. “HF”