1.

How many σ and π bonds are present in each of the following molecules?(a) HC≡CCH≡CHCH3 (b) CH2=C=CHCH3.

Answer»

(a) σ C = C : 4 (b) σ C = C : 3

σ C – H : 6 σ C – H : 6

π C = C : 3 π C = C : 2



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