Hi all, I have a question about the quantum nature of ionic bonds. I know some ideas about molecular bonding which can combine two ground state of H atom to get a bonding state and an anti-bonding state which in the case of H2 molecules it correspond to the covalent bonding (sharing of electrons). However I did not know the quantum mechanics nature of ionic bond. I know that from energetics, the "transfer" of electron is energetic favourable thus this is a bonding. I also understand that the ionic bond is not absolute, it only means that the electron is likely to be found close to 1 atom in the case of simple 2-atom molecule. Can someone kindly explain to me the quantum nature of ionic molecules ? To be more specify, can molecular orbit theory (or any quantum theory) explain ionic bond?