Indicate the σ and π bonds in the following molecules :

C6H6, C6H12, CH2Cl2, CH2=C=CH2, CH3NO2, HCONHCH3

C6H6


There are 6 C-C sigma bonds, 6 C-H sigma bonds and 3 C=C pi resonating bonds.



C6H12


There are 6 C-C sigma bonds and 12 C-H sigma bonds.



CH2C12


There are 2 C-H sigma bonds,and 2 C-Cl sigma bonds.



CH2=C=CH2


There are 1 C-N sigma bonds, 3 C-H sigma bonds, 1 N-O sigma bond and 2 C=C pi bonds.



CH3NO2


There are 6 C-C sigma bonds, 6 C-H sigma bonds and 1 N=O pi resonating bonds.




HCONHCH3


There are 2 C-N sigma bonds, 4 C-H sigma bonds and 1 N-H bond AND 1 C=O pi bond.



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