SELECT * FROM question_mgmt as q WHERE id=3119 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=53 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)
Indicate the σ and π bonds in the following molecules :
(i) C6H6,
(ii) C6H12,
(iii) CH2Cl2,
(iv) CH2=C=CH2,
(v) CH3NO2,
(vi) HCONHCH3
(i) C6H6
There are six C-C sigma (σC-C) bonds, six C-H sigma (σC-H) bonds and three C=C pi (πC-C) resonating bonds in this compound.
(ii) C6H12
There are six C-C sigma (σC-C) bonds and twelve C-H sigma (σC-H) bonds in this compound.
(iii) CH2Cl2
There two C-H sigma (σC-H) bonds and two C-Cl sigma (σC-Cl) bonds in this compound.
(iv) CH2=C=CH2
There are two C-C sigma (σC-C) bonds, four C-H sigma (σC-H) bonds, and two C=C pi (πC-C) bonds in this compound.
(v) CH3NO2
There are three C-H sigma (σC-H) bonds, one C-N sigma (σC-N) bond, one N-O sigma (σN-O) bond and one N=O pi (πN-O) bond in this compound.
(vi) HCONHCH3
There are two C-N sigma (σC-N) bonds, four C-H sigma (σC-H) bonds, one N-H sigma bond, and one C=O pi (πC-O) bond in this compound.
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