To calculate the bond energy required to break the bond between two nitrogen atoms N2 , we need to know the bond dissociation energy BDE for the N-N triple bond. The bond length alone is not sufficient to determine the bond energy.The bond dissociation energy for the N-N triple bond in N2 is approximately 941 kJ/mol. This is the energy required to break the bond between two nitrogen atoms in a mole of N2 molecules.