Average Bond Energies (kJ/mol)
Single Bonds Multiple Bonds
H—H
432
N—H
391
I—I
149
C = C
614
H—F
565
N—N
160
I—Cl
208
C ≡ C
839
H—Cl
427
N—F
272
I—Br
175
O = O
495
H—Br
363
N—Cl
200
 
 
C = O*
745
H—I
295
N—Br
243
S—H
347
C ≡ O
1072
 
 
N—O
201
S—F
327
N = O
607
C—H
413
O—H
467
S—Cl
253
N = N
418
C—C
347
O—O
146
S—Br
218
N ≡ N
941
C—N
305
O—F
190
S—S
266
C ≡ N
891
C—O
358
O—Cl
203
 
 
C = N
615
C—F
485
O—I
234
Si—Si
340
 
 
C—Cl
339
 
 
Si—H
393
 
 
C—Br
276
F—F
154
Si—C
360
 
 
C—I
240
F—Cl
253
Si—O
452
 
 
C—S
259
F—Br
237
 
 
 
 
 
 
Cl—Cl
239
 
 
 
 
 
 
Cl—Br
218
 
 
 
 
 
 
Br—Br
193
 
 
 
 
*C == O(CO2) = 799
Referenced from Chemistry by Zumdahl (5th ed.) Table 8.4 on page 373