Arrange the following bonds in decreasing order of bond strength : 

C-N, C=N, C≡N

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1 Answers

C≡N > C=N > C-N

Note : 

Average bond lengths for some single, double and triple bonds :

Type of bond Covalent bond length (pm)
O-H 96
C-H 107
N-O 136
C-O 143
C-N 143
C-C 154
C=C 121
N=O 122
C=C 133
C=N 138
C≡N 116
C≡C 120
Type of bond Covalent bond length (pm)
H2(H-H) 74
F2(F-F) 144
Cl2(Cl-Cl) 199
Br2(Br-Br) 228
I2(I-I) 267
N2(N≡N) 109
O2(O-O) 121
HF (H-F) 92
HCl (H-Cl) 127
HBr (H-Br) 141
HI (H-I) 160
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