Bond energy : Energy required to break a bond (equal to the energy released when a bond is formed) is named bond energy. Its unit is Kcal/mole. Stability of bond bond energy $\alpha$% s $\text{ character }\mathrm{\alpha }\frac{1}{\mathrm{\%}\text{ p character }}\mathrm{\infty }\text{ bond order }\mathrm{\alpha }\frac{1}{\text{ bond length }}$ Higher is the number of bonds at a place, higher is the bond energy.