First slide

Alkynes

Question

The total number of sigma and pi bonds present in the product formed from the reaction of 4,4–dibromobut–1–yne with excess of sodamide.

Moderate

A

3
B

6
C

9
D

12

Solution

4,4–dibromobut–1–yne with excess of sodamide give buta–1,3–diyne. It is having 5 sigma bonds and four pi bonds. Total sigma and pi bonds are 9.

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