Based on the bond energies given for each of the following which is the most stable? O=O 498 kJ/mol N≡N 946 kJ/mol C=C 614 kJ/mol C=O 745 kJ/mol C≡C 839 kJ/mol

N≡N bond

Explanation:

Bond energy (bond enthalpy) is a measure of the bond strength in the bond. It is defined as average value of bond dissociation energies in the gas-phase for all the bonds having same type with in same chemical species.

The greater the bond energy, the greater is the amount of energy required to break the bond, the more stable is the bond.

Thus, among the following bonds:

O=O 498 kJ/mol

N≡N 946 kJ/mol

C=C 614 kJ/mol

C=O 745 kJ/mol

C≡C 839 kJ/mol

The greatest bond energy is of N≡N 946 kJ/mol and thats why it is the most stable.