Standard Bond Energies (kcal/mol)

Single Bonds

DH*

 

Single Bonds

DH*

 

Multiple Bonds

DH*

H-H

104.2

B-F

150

C=C

146

C-C

83

B-O

125

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

192

Si-Si

52

O-CO

110

C=S

138

P-P

50

C-S

65

N=O

143

S-S

54

C-F

116

P=O

110

Cl-Cl

58

C-Cl

81

P=S

70

Br-Br

46

C-Br

68

S=O

128

I-I

36.

C-I

51

P=P

84

H-C

99

C-B

90

P@P

117

H-N

93

C-Si

83

C@O

258

H-O

111

C-P

70

C@C

200

H-F

135

N-O

55

N@N

226

H-Cl

103

S-O

87

C@N

213

H-Br

87.5

Si-F

135

 

 

H-I

71

Si-Cl

90

 

 

H-B

90

Si-O

110

 

 

H-S

81

P-Cl

79

 

 

H-Si

75

P-Br

65

 

 

H-P

77

P-O

90