Definition of Bond Dissociation Energy

Bond dissociation energy is the energy that is required to break a bond present between two chemical species. This results in the formation of two atomic or molecular fragments. Both of them carry an electron of the originally shared pair of electrons. The bonds which are stable and strong tend to have a large value of bond dissociating energy. The bond energy is dependent upon the number of bonds that are present between the atoms.


The bond dissociation energy of the triple bond is greater than the double bond that of the double bond is greater than the single bond. The bond dissociation energy depends on the difference in the electronegativity. The greater the difference in the electronegativity, the greater is the bond dissociation energy.

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