Bond Energy

Single Bonds	ΔHº		Single Bonds	ΔHº		Multiple Bonds	ΔHº
H-H	104.2		B-F	154		C=C	146
C-C	83		B-O	123		N=N	109
N-N	38.4		C-N	73		O=O	119
O-O	35		N-CO	86		C=N	147
F-F	36.6		C-O	85.5		C=O (CO2)	192
Si-Si	52		O-CO	110		C=O (aldehyde)	177
P-P	51		C-S	65		C=O (ketone)	178
S-S	54		C-F	116		C=O (ester)	179
Cl-Cl	58		C-Cl	81		C=O (amide)	179
Br-Br	46		C-Br	68		C=O (halide)	177
I-I	36		C-I	51		C=S (CS2)	138
H-C	99		C-B	94		N=O (HONO2)	143
H-N	93		C-Si	83		P=O (POCl3)	110
H-O	111		C-P	73		P=S (PSCl3)	70
H-F	135		N-O	55		S=O (SO2)	128
H-Cl	103		S-O	87		S=O (DMSO)	93
H-Br	87.5		Si-F	132		P=P	84
H-I	71		Si-Cl	86		P≡P	117
H-B	90		Si-O	110		C≡O	258
H-S	81		P-Cl	79		C≡C	200
H-Si	70		P-Br	65		N≡N	226
H-P	77		P-O	96		C≡N	213