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.
There is a screen reader searchable field for each row for screen readers. You can use your screen reader's built in search to find your bond. Put the elements with the bond in with no spaces. Use minus key for single bond, equals for double bond, and triple equals for triple bond, the triple equals key code is typically alt 240 for windows, or Unicode U+2261.
Bond to Bond Enthalpy in kilo joules per mole. There is a screen reader searchable field for each row, put the elements with no spaces, use minus key for single bond, equals for double bond, and triple equals for triple bond, the triple equals key code is typically alt 240 for windows, or Unicode U+2261.
Bond
Bond Enthalpy (\(\unit{\kilo\joule\per\mole}\))
\(\eAs\sbond\eAs\)
146
\(\eAs\sbond\eBr\)
458
\(\eAs\sbond\eCl\)
322
\(\eAs\sbond\eF\)
484
\(\eAs\sbond\eH\)
247
\(\eAs\sbond\eI\)
200
\(\eAs\sbond\eO\)
301
\(\eAt\sbond\eAt\)
116
\(\eB\sbond\eB\)
293
\(\eB\sbond\eBe\)
377
\(\eB\sbond\eBr\)
377
\(\eB\sbond\eC\)
356
\(\eB\sbond\eCl\)
456
\(\eB\sbond\eF\)
613
\(\eB\sbond\eH\)
389
\(\eB\sbond\eO\)
536
\(\eBe\sbond\eB\)
377
\(\eBr\sbond\eAs\)
458
\(\eBr\sbond\eBr\)
190
\(\eBr\sbond\eC\)
276
\(\eBr\sbond\eCl\)
218
\(\eBr\sbond\eF\)
237
\(\eBr\sbond\eGe\)
276
\(\eBr\sbond\eH\)
363
\(\eBr\sbond\eI\)
175
\(\eBr\sbond\eN\)
243
\(\eBr\sbond\eP\)
264
\(\eBr\sbond\eS\)
218
\(\eBr\sbond\eSi\)
310
\(\eBr\sbond\eSn\)
273
\(\eC\sbond\eB\)
356
\(\eC\sbond\eBr\)
276
\(\eC\sbond\eC\)
346
\(\eC\sbond\eCl\)
339
\(\eC\sbond\eF\)
485
\(\eC\sbond\eGe\)
238
\(\eC\sbond\eH\)
413
\(\eC\sbond\eI\)
240
\(\eC\sbond\eN\)
305
\(\eC\sbond\eO\)
358
\(\eC\sbond\eP\)
264
\(\eC\sbond\ePb\)
130
\(\eC\sbond\eS\)
259
\(\eC\sbond\eSi\)
360
\(\eC\sbond\eSn\)
192
\(\eC\dbond\eC\)
614
\(\eC\dbond\eN\)
615
\(\eC\dbond\eO\)
745
\(\eC\dbond\eS\)
573
\(\eC\tbond\eC\)
839
\(\eC\tbond\eN\)
891
\(\eC\tbond\eO\)
1072
\(\eCl\sbond\eAs\)
322
\(\eCl\sbond\eB\)
456
\(\eCl\sbond\eBr\)
218
\(\eCl\sbond\eC\)
339
\(\eCl\sbond\eCl\)
239
\(\eCl\sbond\eF\)
253
\(\eCl\sbond\eGe\)
349
\(\eCl\sbond\eH\)
428
\(\eCl\sbond\eI\)
208
\(\eCl\sbond\eN\)
200
\(\eCl\sbond\eO\)
203
\(\eCl\sbond\eP\)
326
\(\eCl\sbond\ePb\)
243
\(\eCl\sbond\eS\)
253
\(\eCl\sbond\eSb\)
288
\(\eCl\sbond\eSi\)
381
\(\eCl\sbond\eSn\)
323
\(\eF\sbond\eAs\)
484
\(\eF\sbond\eB\)
613
\(\eF\sbond\eBr\)
237
\(\eF\sbond\eC\)
485
\(\eF\sbond\eCl\)
253
\(\eF\sbond\eF\)
154
\(\eF\sbond\eGe\)
470
\(\eF\sbond\eH\)
565
\(\eF\sbond\eI\)
273
\(\eF\sbond\eKr\)
50
\(\eF\sbond\eN\)
272
\(\eF\sbond\eO\)
190
\(\eF\sbond\eP\)
490
\(\eF\sbond\ePb\)
331
\(\eF\sbond\eS\)
327
\(\eF\sbond\eSb\)
440
\(\eF\sbond\eSi\)
565
\(\eF\sbond\eSn\)
414
\(\eF\sbond\eXe\)
130
\(\eGe\sbond\eBr\)
276
\(\eGe\sbond\eCl\)
349
\(\eGe\sbond\eF\)
470
\(\eGe\sbond\eGe\)
188
\(\eGe\sbond\eH\)
288
\(\eGe\sbond\eI\)
212
\(\eGe\sbond\eN\)
257
\(\eH\sbond\eAs\)
247
\(\eH\sbond\eB\)
389
\(\eH\sbond\eBr\)
363
\(\eH\sbond\eC\)
413
\(\eH\sbond\eCl\)
428
\(\eH\sbond\eF\)
565
\(\eH\sbond\eGe\)
288
\(\eH\sbond\eH\)
432
\(\eH\sbond\eI\)
295
\(\eH\sbond\eN\)
391
\(\eH\sbond\eO\)
467
\(\eH\sbond\eP\)
322
\(\eH\sbond\eS\)
347
\(\eH\sbond\eSe\)
276
\(\eH\sbond\eSi\)
393
\(\eH\sbond\eSn\)
251
\(\eH\sbond\eTe\)
238
\(\eI\sbond\eAs\)
200
\(\eI\sbond\eBr\)
175
\(\eI\sbond\eC\)
240
\(\eI\sbond\eCl\)
208
\(\eI\sbond\eF\)
273
\(\eI\sbond\eGe\)
212
\(\eI\sbond\eH\)
295
\(\eI\sbond\eI\)
149
\(\eI\sbond\eO\)
234
\(\eI\sbond\eP\)
184
\(\eI\sbond\ePb\)
142
\(\eI\sbond\eSi\)
234
\(\eI\sbond\eSn\)
205
\(\eKr\sbond\eF\)
50
\(\eN\sbond\eBr\)
243
\(\eN\sbond\eC\)
305
\(\eN\sbond\eCl\)
200
\(\eN\sbond\eF\)
272
\(\eN\sbond\eGe\)
257
\(\eN\sbond\eH\)
391
\(\eN\sbond\eN\)
160
\(\eN\sbond\eO\)
201
\(\eN\sbond\eSi\)
355
\(\eN\dbond\eC\)
615
\(\eN\dbond\eN\)
418
\(\eN\dbond\eO\)
607
\(\eN\tbond\eC\)
891
\(\eN\tbond\eN\)
941
\(\eO\sbond\eAs\)
301
\(\eO\sbond\eB\)
536
\(\eO\sbond\eC\)
358
\(\eO\sbond\eCl\)
203
\(\eO\sbond\eF\)
190
\(\eO\sbond\eH\)
467
\(\eO\sbond\eI\)
234
\(\eO\sbond\eN\)
201
\(\eO\sbond\eO\)
146
\(\eO\sbond\eP\)
335
\(\eO\sbond\eSi\)
452
\(\eO\sbond\eXe\)
84
\(\eO\dbond\eC\)
745
\(\eO\dbond\eN\)
607
\(\eO\dbond\eO\)
495
\(\eO\dbond\eP\)
544
\(\eO\dbond\eS\)
522
\(\eO\tbond\eC\)
1072
\(\eP\sbond\eBr\)
264
\(\eP\sbond\eC\)
264
\(\eP\sbond\eCl\)
326
\(\eP\sbond\eF\)
490
\(\eP\sbond\eH\)
322
\(\eP\sbond\eI\)
184
\(\eP\sbond\eO\)
335
\(\eP\sbond\eP\)
201
\(\eP\dbond\eO\)
544
\(\eP\dbond\eS\)
335
\(\ePb\sbond\eBr\)
201
\(\ePb\sbond\eC\)
130
\(\ePb\sbond\eCl\)
243
\(\ePb\sbond\eF\)
331
\(\ePb\sbond\eI\)
142
\(\eS\sbond\eBr\)
218
\(\eS\sbond\eC\)
259
\(\eS\sbond\eCl\)
253
\(\eS\sbond\eF\)
327
\(\eS\sbond\eH\)
347
\(\eS\sbond\eS\)
266
\(\eS\sbond\eSi\)
293
\(\eS\dbond\eC\)
573
\(\eS\dbond\eO\)
522
\(\eS\dbond\eP\)
335
\(\eS\dbond\eS\)
425
\(\eSb\sbond\eCl\)
288
\(\eSb\sbond\eF\)
440
\(\eSb\sbond\eSb\)
121
\(\eSe\sbond\eH\)
276
\(\eSe\sbond\eSe\)
172
\(\eSe\dbond\eSe\)
272
\(\eSi\sbond\eBr\)
310
\(\eSi\sbond\eC\)
360
\(\eSi\sbond\eCl\)
381
\(\eSi\sbond\eF\)
565
\(\eSi\sbond\eH\)
393
\(\eSi\sbond\eI\)
234
\(\eSi\sbond\eN\)
355
\(\eSi\sbond\eO\)
452
\(\eSi\sbond\eS\)
293
\(\eSi\sbond\eSi\)
340
\(\eSn\sbond\eBr\)
273
\(\eSn\sbond\eCl\)
323
\(\eSn\sbond\eF\)
414
\(\eSn\sbond\eH\)
251
\(\eSn\sbond\eI\)
205
\(\eTe\sbond\eH\)
238
\(\eXe\sbond\eF\)
130
\(\eXe\sbond\eO\)
84
\(\eMn\eBr_2\mss\)
-384.9
\(\eMn\eCl_2\mss\)
-481.3
\(\eMn\eO\mss\)
-385.2
\(\eMn\eO_2\mss\)
-520
\(\eMn\eO_4^{-}\msaq\)
-541.4
\(\eMo\msg\)
658.1
\(\eMo\mss\)
0
\(\eMo\eO_2\mss\)
-588.9
\(\eMo\eO_3\mss\)
-745.1
\(\eMo\eS_2\mss\)
-235.1
\(\eMo\eS_3\mss\)
-364
\(\eN\msg\)
472.7
\(\eN_2\msg\)
0
\(\eN_2\eH_4\msg\)
95.4
\(\eN_2\eH_4\msl\)
50.6
\(\eN_2\eO\msg\)
81.6
\(\eN_2\eO_4\msg\)
11.1
\(\eN_2\eO_4\msl\)
-19.5
\(\eNa\msg\)
107.5
\(\eNa\mss\)
0
\(\eNa^{+}\msaq\)
-240.2
\(\eNa_2\eC\eO_3\mss\)
-1130.7
\(\eNa_2\eO\mss\)
-414.2
\(\eNa_2\eO_2\mss\)
-510.9
\(\eNa_2\eS\eO_4\mss\)
-1387.1
\(\eNa\eBr\msaq\)
-361.7
\(\eNa\eBr\msg\)
-143.1
\(\eNa\eBr\mss\)
-361.1
\(\eNa\eCl\msaq\)
-407.3
\(\eNa\eCl\mss\)
-411.2
\(\eNa\eC\eN\mss\)
-87.5
\(\eNa\eF\msaq\)
-572.8
\(\eNa\eF\mss\)
-576.6
\(\eNa\eH\mss\)
-56.3
\(\eNa\eN_3\mss\)
21.7
\(\eNa\eN\eO_3\msaq\)
-447.5
\(\eNa\eN\eO_3\mss\)
-467.9
\(\eNa\eO_2\mss\)
-260.2
\(\eNa\eO\eH\mss\)
-425.8
\(\eNe\msg\)
0
\(\eN\eF_3\msg\)
-132.1
\(\eN\eH_3\msg\)
-45.9
\(\eN\eH_4^{+}\msaq\)
-133.3
\(\eN\eH_4\eCl\mss\)
-314.4
\(\eN\eH_4\eN\eO_3\mss\)
-365.6
\(\eN\eH_4\eO\eH\msl\)
-361.2
\((\eN\eH_4)_2\eS\eO_4\mss\)
-1180.9
\(\eNi\msg\)
429.7
\(\eNi(\eO\eH)_2\mss\)
-529.7
\(\eNi\mss\)
0
\(\eNi_2\eO_3\mss\)
-489.5
\(\eNi\eBr_2\mss\)
-212.1
\(\eNi\eCl_2\mss\)
-305.3
\(\eNi\eF_2\mss\)
-651.4
\(\eN\eO\msg\)
91.3
\(\eN\eO_2\msg\)
33.2
\(\eO\msg\)
249.2
\(\eO_2\msg\)
0
\(\eO_3\msg\)
142.7
\(\eO\eH^{-}\msaq\)
-230
\(\eOs\msg\)
791
\(\eOs\mss\)
0
\(\eOs\eO_4\msg\)
-337.2
\(\eOs\eO_4\mss\)
-394.1
\(\eP(g, white)\)
316.5
\(\eP(s, black)\)
-39.3
\(\eP(s, red)\)
-17.6
\(\eP(s, white)\)
0
\(\eP_2\msg\)
144
\(\eP_4\msg\)
58.9
\(\ePb\msg\)
195.2
\(\ePb(\eN\eO_3)_2\msaq\)
-416.3
\(\ePb(\eN\eO_3)_2\mss\)
-451.9
\(\ePb\mss\)
0
\(\ePb\eCl_2\mss\)
-359.4
\(\ePb\eC\eO_3\mss\)
-699.1
\(\ePb\eO\mss(\text{red or litharge})\)
-219
\(\ePb\eO\mss(\text{yellow or massicot})\)
-217.3
\(\ePb\eO_2\mss\)
-277.4
\(\ePb\eS\mss\)
-100.4
\(\ePb\eS\eO_4\mss\)
-920
\(\eP\eCl_3\msg\)
-287
\(\eP\eCl_3\msl\)
-319.7
\(\eP\eCl_5\msg\)
-374.9
\(\eP\eH_3\msg\)
5.4
\(\eP\eO\eCl_3\msg\)
-558.5
\(\eP\eO\eCl_3\msl\)
-597.1
\(\eRb\msg\)
80.9
\(\eRb\mss\)
0
\(\eRb\eCl\mss\)
-435.4
\(\eS\msg(\text{rhombic})\)
277.2
\(\eS\mss(\text{rhombic})\)
0
\(\eSe\msg(\text{gray})\)
227.1
\(\eSe\mss(\text{gray})\)
0
\(\eSi\msg\)
450
\(\eSi\mss\)
0
\(\eSi\eC\mss(\text{cubic})\)
-65.3
\(\eSi\eC\mss(\text{hexagonal})\)
-62.8
\(\eSi\eCl_4\msg\)
-657
\(\eSi\eCl_4\msl\)
-687
\(\eSi\eH_4\msg\)
34.3
\(\eSn\msg(\text{white})\)
301
\(\eSn\mss(\text{gray})\)
-2.1
\(\eSn\mss(\text{white})\)
0
\(\eSn\eCl_4\msg\)
-471.5
\(\eSn\eCl_4\msl\)
-511.3
\(\eSn\eO_2\mss\)
-557.6
\(\eS\eO_2\msg\)
-296.8
\(\eS\eO_3\msg\)
-395.7
\(\eS\eO_4^{2-}\msaq\)
-909.3
\(\eS\eO\eCl_2\msg\)
-212.5
\(\eTi\msg\)
473
\(\eTi\mss\)
0
\(\eTi\eCl_2\mss\)
-513.8
\(\eTi\eCl_3\mss\)
-720.9
\(\eTi\eCl_4\msg\)
-763
\(\eTi\eCl_4\msl\)
-804.2
\(\eTi\eO_2\mss\)
-944
\(\eU\msg\)
533
\(\eU\mss\)
0
\(\eU\eF_4\msg\)
-1598.7
\(\eU\eF_4\mss\)
-1914.2
\(\eU\eF_6\msg\)
-2147.4
\(\eU\eF_6\mss\)
-2197
\(\eU\eO_2\msg\)
-465.7
\(\eU\eO_2\mss\)
-1085
\(\eV\msg\)
514.2
\(\eV\mss\)
0
\(\eV_2\eO_5\mss\)
-1550.6
\(\eV\eCl_3\mss\)
-580.7
\(\eV\eCl_4\msg\)
-525.5
\(\eV\eCl_4\msl\)
-569.4
\(\eXe\msg\)
0
\(\eZn\msg\)
130.4
\(\eZn(\eN\eO_3)_2\mss\)
-483.7
\(\eZn\mss\)
0
\(\eZn\eBr_2\mss\)
-328.7
\(\eZn\eCl_2\mss\)
-415.1
\(\eZn\eF_2\mss\)
-764.4
\(\eZn\eI_2\mss\)
-208
\(\eZn\eS\mss(\text{sphalerite})\)
-206
\(\eZn\eS\eO_4\mss\)
-982.8
\(\eZr\msg\)
608.8
\(\eZr\mss\)
0
\(\eZr\eCl_2\mss\)
-502
\(\eZr\eCl_4\mss\)
-980.5