Bond strength

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Bond strength is the amount of energy needed to break a chemical bond. The concept of bond strength is important for understanding chemical reactions, chemical kinetics and activation energy. Below are tabulated some example bond strengths.[1]

Chemical Bond Bond Strength (kcals/mole)
C-H 99
C-C1 79
C-C 83
C-N 70
C-O 84
C=C 147
C=O 170
H-H 104
H-O 111
H-C1 103
O=O 118
N=N 226
N-H 66
C1-C1 58


  1. Wile, Dr. Jay L. Exploring Creation With Chemistry. Apologia Educational Ministries, Inc. 1998