Nonmetal-Nonmetal is Covalent bond
Nonmetal-Metal is Ionic bond
Metal-Metal is Metallic bond
Polar molecules are characterize by an imbalance of electrostatic forces between the molecules. It arises when the electronegativity of the elements differ greatly. Since there is a great difference of the partial charges, the intermolecular or intramolecular force involved here is the electrostatic bond.
2 H2O2 - 2 H2O+O2 - Balanced Equation and its a decomposition reaction.
