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The number of sigma and pi-bonds in 1-butene -3-yne are

(a) 5 sigma and 5 pi

(b) 7 sigma and 3 pi

(c) 8 sigma and 2 pi

(d) 5 sigma and 4 pi

Can you answer this question?
 
 

1 Answer

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In $ (H_2 = CH - C \equiv CH)$ there are $7 \sigma$ and $3 \pi$ bonds.
Hence b is the correct answer.
answered Feb 21, 2014 by meena.p
 

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