Question

1.How many σ and π bonds are present in each of the following molecules? (a) H≡CC≡CCH3 (b) CH2=C=CHCH3.​

Answer 1

a) 4 pie and 7 sigma bonds

b) 2 pie and 8 sigma bonds

Explanation:

• CH₃ has 3 sigma bonds.

• H≡CC≡CCH3 has two triple bonds, 1 triple bond contains one sigma bond and two pie bonds.
• Hence this compound will contain 4 pie bonds and 7 sigma bonds.
• CH2=C=CHCH3 has two double bonds, 1 double contains one sigma and one pie bond.
• Hence this compound will contain 2 pie and 8 sigma bonds.        

Answer 2

Answer:

H≡CC≡CCH3 has two triple bonds, 1 triple bond contains one sigma bond and two pie bonds. Hence this compound will contain 4 pie bonds and 7 sigma bonds. CH2=C=CHCH3 has two double bonds, 1 double contains one sigma and one pie bond. Hence this compound will contain 2 pie and 8 sigma bonds.

Explanation:

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