Ionic compounds are balanced as shown earlier. The table below shows examples of some ionic compounds using formulas from the above table. Therefore all atoms included have fairly high electronegativity and few vacancies in valence energy levels . When they bond, they gain electrons to achieve stable configuration. Hence, electrons are shared .
Covalence is the number of electrons an atom needs to gain to produce a stable outer shell.
Each molecule exists independently. Single Bond - 1 shared pair of electrons. This table shows properties of covalent molecular compounds and explanations of these properties. Property Explanation Do not conduct electricity. No mobile charged particles Molecules not charged Electrons tightly bound to atoms or shared by atoms in covalent bonds.