First slide

Alkynes

Question

Number of π bonds and σ bonds in the following structure is

Moderate

A

6, 12
B

6, 23
C

6, 10
D

5, 23

Solution

[Step 1]:
All C-H bonds are single covalent bonds are σ bonds.
[Step 2]:
All C-C single covalent bonds are σ bonds.
[Step 3]:
C=C double covalent bond contain one σ bond and one π bond.
[Step 4]:
Therefore number of C-H σ bonds = 10
number of C-C σ bonds = 7
number of C=C σ bonds = 6
number of C=C π bonds = 6

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