Group 1, ionic bonding. Elements of group 1 have only one electron in their valence shell whereas elements of group 7 have seven valence electrons. When the valence electron from group 1 is transferred to an atom in group 7, both atoms become stable as their valence shells are complete. The bond formed by the transfer of electrons is known as ionic bond.
Electron movement in the bonding of Group ___ elements with Group 7A elements is best described as ______________