question_answer

How many sigma and n-bonds are there in the following compound? \[C{{H}_{2}}=CH-C\equiv C-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,=C{{H}_{2}}\]

A) \[11\sigma ,4\pi \]

B) \[12\sigma ,3\pi \]

C)  \[14\sigma ,4\pi \]

D) \[15\sigma ,4\pi \]

Correct Answer: C

Solution :

 Key Idea: First bond between any two atoms is sigma and rest are pi bonds. \[14\sigma \]and \[4\pi \]bonds are there.