In ionic bonding, electrons are completely transferred from one atom to another. In the process of either losing or gaining negatively charged electrons, the reacting atoms form ions. The oppositely charged ions are attracted to each other by electrostatic forces, which are the basis of the ionic bond.
Entropy is a measure of the degree of the spreading and sharing of thermal energy within a system. The entropy of a substance increases with its molecular weight and complexity and with temperature. The entropy also increases as the pressure or concentration becomes smaller.
1 At the higher temperature, the reaction is not feasible as the entropy of the reaction is decreasing. 2  However, ice will melt at this temperature, as the entropy increases 3  : Both the processes of ice melting at 10 o C and water freezing at -10 o C are spontaneous reactions; they can occur. The total entropy is equal to: 2  Using this equation for the freezing of water at -10 o C for example: 3  The overall entropy increases, and so the reaction is feasible (in thermodynamic terms, the reaction would be described as being spontaneous; however, this does not in any way describe how fast the reaction occurs).