Show on a diagram the transfer of electrons between the atoms in the formation of MgO.

43 Write the electron arrangement in (i) a magnesium atom, and (ii) an oxygen atom. 43 How many electrons a re there in the valence shell of (i) a magnesium atom, and (ii) an oxygen atom? 43 Name the solvent in which ionic compounds are generally soluble. 43 Why are aqueous solutions of ionic compounds able to conduct electricity?