Table of Average Bond Energies (in kJ/mol)
Single Bonds
I
Br
Cl
S
P
Si
F
O
N
C
H
H
299
366
431
347
322
323
566
467
391
416
436
C
213
285
327
272
264
301
486
336
285
356
N
-
-
193
-
~200
355
272
201
160
O
201
-
205
-
~340
368
190
146
F
-
-
255
326
490
582
158
Si
234
310
391
226
-
226
P
184
264
319
-
209
S
-
213
255
226
Cl
209
217
242
Br
180
193
I
151
Multiple Bonds
N = N 
418
C = C
598
N
946
C C
813
C = N
616
C = O (in CO2, O=C=O)
803
C N
866
C = O (as in H2C=O)
695
O = O (in O2)
498
C O
1073