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12.1: Bond Energies

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    Table \(\PageIndex{1}\): Bond Energies (kJ/mol)
    Bond Bond Energy Bond Bond Energy Bond Bond Energy
    H–H 436 C–S 260 F–Cl 255
    H–C 415 C–Cl 330 F–Br 235
    H–N 390 C–Br 275 Si–Si 230
    H–O 464 C–I 240 Si–P 215
    H–F 569 N–N 160 Si–S 225
    H–Si 395 \(\ce{N=N}\) 418 Si–Cl 359
    H–P 320 \(\ce{N#N}\) 946 Si–Br 290
    H–S 340 N–O 200 Si–I 215
    H–Cl 432 N–F 270 P–P 215
    H–Br 370 N–P 210 P–S 230
    H–I 295 N–Cl 200 P–Cl 330
    C–C 345 N–Br 245 P–Br 270
    \(\ce{C=C}\) 611 O–O 140 P–I 215
    \(\ce{C#C}\) 837 \(\ce{O=O}\) 498 S–S 215
    C–N 290 O–F 160 S–Cl 250
    \(\ce{C=N}\) 615 O–Si 370 S–Br 215
    \(\ce{C#N}\) 891 O–P 350 Cl–Cl 243
    C–O 350 O–Cl 205 Cl–Br 220
    \(\ce{C=O}\) 741 O–I 200 Cl–I 210
    \(\ce{C#O}\) 1080 F–F 160 Br–Br 190
    C–F 439 F–Si 540 Br–I 180
    C–Si 360 F–P 489 I–I 150
    C–P 265 F–S 285    
    Table \(\PageIndex{2}\): Average Bond Lengths and Bond Energies for Some Common Bonds
    Bond Bond Length (Å=0.1 nm) Bond Energy (kJ/mol)
    C–C 1.54 345
    \(\ce{C=C}\) 1.34 611
    \(\ce{C#C}\) 1.20 837
    C–N 1.43 290
    \(\ce{C=N}\) 1.38 615
    \(\ce{C#N}\) 1.16 891
    C–O 1.43 350
    \(\ce{C=O}\) 1.23 741
    \(\ce{C#O}\) 1.13 1080

    12.1: Bond Energies is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.

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