Bond Energy and Enthalpy

Bond energy is the measure of bond strength. In order to turn one mole of a molecule into its constituent atoms, an amount of heat equal to the bond energy needs to be put into the system.

Bond enthalpy is defined as the enthalpy change when a covalent bond is cleaved by homolysis.

Bond length between two atoms depends on factors such as the orbital hybridization and the electronic nature of the components.