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Question -

Indicate the σ and π bondsin the following molecules:

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



Answer -

(i) C6H6

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

(ii) C6H12

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

(iii) CH2Cl2
There two C–H sigma () bonds and two C–Cl sigma () bonds in the givencompound.

(iv) CH=C = CH2

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

(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 givencompound.
(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 givencompound.

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