A) \[6\sigma \]and \[4\pi \]
B) \[6\sigma \]and \[6\pi \]
C) \[7\sigma \]and \[5\pi \]
D) \[7\sigma \]and \[3\pi \]
Correct Answer: D
Solution :
1-buten-3-yne can be written as\[H\overset{\sigma }{\mathop{\_\_}}\,\underset{H}{\mathop{\underset{|\sigma }{\mathop{C}}\,}}\,\underset{\sigma }{\overset{\pi }{\mathop{=}}}\,\underset{H}{\mathop{\underset{|\sigma }{\mathop{C}}\,}}\,\overset{\sigma }{\mathop{\_\_}}\,C\underset{\sigma }{\overset{2\pi }{\mathop{\equiv }}}\,C\overset{\sigma }{\mathop{\_\_}}\,H\]It consist of \[3\pi \]and \[7\sigma \] bonds.
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