Atoms bond and become ionic by the transfer of the valence electrons between the elements atoms. This type of bond which is chemical generates two oppositely charged ions. the ions bonds are mostly metal and the metal will always lose electrons to become a positive chargers cation while non metals accepts the electrons to become negative charged anions. For example the bond I chose was oxygen and calcium which makes the bond Calcium-Oxide. Calcium gives two valence electrons that it has to oxygen to become a cation. This will add two more valence electrons to Oxygens 6 existing valence electrons to turn into an anion with 8 total valence electrons.
