How bond energies and bond length d of molecule helps us in predicting their chemical properties? Explain with the examples.

Bond length is defined as the distance between the nuclei of 2 atoms which are involved in bonding. Bond energy is defined as the energy required to break the bond between 2 atoms of a diatomic covalent compound in its gaseous state. Bond energy is generally inversely proportional to bond length. For ex. Chlorine has smaller sized atoms, lesser bond length so high bond energy. Iodine has bigger atoms, more bond length, so less bond energy.

The lesser the bond energy, more is the instability and more is the chemical reactivity. The higher the bond energy, more is the stability and less is the chemical reactivity.