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Reference Tables and Other Information

Table of Bond Enthalpies

Bond enthalpy values indicate the amount of energy required to break 1 mole of a bond in a gaseous substance.  Learn more on our Tutorial page. 
 

Bond Bond Enthalpy (kJ/mol)
As–As 146
As–Br 458
As–Cl 322
As–F 484
As–H 247
As–I 200
As–O 301
   
At–At 116
   
B–B 293  
B–Be 377
B–Br 377
B–C 356
B–Cl 456
B–F 613
B–H 389
B–O 536
   
Be–B 377
   
Br–As 458
Br–Br 190
Br–C 276
Br–Cl 218
Br–F 237
Br–Ge 276
Br–H 363
Br–I 175
Br–N 243
Br–P 264
Br–S 218
Br–Si 310
Br–Sn 273
   
C–B 356
C–Br 276
C–C 346
C–Cl 339
C–F 485
C–Ge 238
C–H 413
C–I 240
C–N 305
C–O 358
C–P 264
C–Pb 130
C–S 259
C–Si 360
C–Sn 192
C=C 614
C=N 615
C=O 745
C=S 573
C≡C 839
C≡N 891
C≡O 1072
   
Cl–As 322
Cl–B 456
Cl–Br 218
Cl–C 339
Cl–Cl 239
Cl–F 253
Cl–Ge 349
Cl–H 428
Cl–I 208
Cl–N 200
Cl–O 203
Cl–P 326
Cl–Pb 243
Cl–S 253
Cl–Sb 288
Cl–Si 381
Cl–Sn 323
   
F–As 484
F–B 613
F–Br 237
F–C 485
F–Cl 253
F–F 154  
F–Ge 470
F–H 565
F–I 273
F–Kr 50
F–N 272
F–O 190
F–P 490
F–Pb 331
F–S 327
F–Sb 440
F–Si 565
F–Sn 414
F–Xe 130
   
Ge–Br 276
Ge–Cl 349
Ge–F 470
Ge–Ge 188
Ge–H 288
Ge–I 212
Ge–N 257
   
H–As 247
H–B 389
H–Br 363
H–C 413
H–Cl 428
H–F 565
H–Ge 288
H–H 432  
H–I 295
H–N 391
H–O 467
H–P 322
H–S 347
H–Se 276
H–Si 393
H–Sn 251
H–Te 238
   
I–As 200
I–Br 175
I–C 240
I–Cl 208
I–F 273
I–Ge 212
I–H 295
I–I 149
I–O 234
I–P 184
I–Pb 142
I–Si 234
I–Sn 205
   
Kr–F 50  
   
N–Br 243
N–C 305
N–Cl 200
N–F 272
N–Ge 257
N–H 391
N–N 160  
N–O 201
N–Si 355
N=C 615
N=N 418
N=O 607
N≡C 891
N≡N 941
   
O–As 301
O–B 536
O–C 358
O–Cl 203
O–F 190
O–H 467
O–I 234
O–N 201
O–O 146  
O–P 335
O–Si 452
O–Xe 84
O=C 745
O=N 607
O=O 495
O=P 544
O=S 522
O≡C 1072
   
P–Br 264
P–C 264
P–Cl 326
P–F 490
P–H 322
P–I 184
P–O 335
P–P 201
P=O 544
P=S 335
   
Pb–Br 201
Pb–C 130
Pb–Cl 243
Pb–F 331
Pb–I 142
   
S–Br 218
S–C 259
S–Cl 253
S–F 327
S–H 347
S–S 266
S–Si 293
S=C 573
S=O 522
S=P 335
S=S 425
   
Sb–Cl 288
Sb–F 440
Sb–Sb 121
   
Se–H 276
Se–Se 172
Se=Se 272
   
Si–Br 310
Si–C 360
Si–Cl 381
Si–F 565
Si–H 393
Si–I 234
Si–N 355
Si–O 452
Si–S 293
Si–Si 340
   
Sn–Br 273
Sn–Cl 323
Sn–F 414
Sn–H 251
Sn–I 205
   
Te–H 238
   
Xe–F 130
Xe–O 84



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