Question

Indicate the σ and π bonds in the following molecules:

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

Answer 1

(i) C₆H₆

There are six C–C sigma () bonds, six C–H sigma () bonds, and three C=C pi () resonating bonds in the given compound.

(ii) C₆H₁₂

There are six C–C sigma () bonds and twelve C–H sigma () bonds in the given compound.

(iii) CH₂Cl₂

There two C–H sigma () bonds and two C–Cl sigma () bonds in the given compound.

(iv) CH₂ = C = CH₂

There are two C–C sigma () bonds, four C–H sigma () bonds, and two C=C pi () bonds in the given compound.

(v) CH₃NO₂

There are three C–H sigma () bonds, one C–N sigma () bond, one N–O sigma () bond, and one N=O pi () bond in the given compound.

(vi) HCONHCH₃

There are two C–N sigma () bonds, four C–H sigma () bonds, one N–H sigma bond, and one C=O pi () bond in the given compound.