Name the solvent in which ionic compounds are generally soluble.

43 How many electrons a re there in the valence shell of (i) a magnesium atom, and (ii) an oxygen atom? 43 Show on a diagram the transfer of electrons between the atoms in the formation of MgO. 43 Why are aqueous solutions of ionic compounds able to conduct electricity? 44 What is the electronic configuration of (i) a sodium atom, and (ii) an oxygen atom ?