1.

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

Answer»

5 sigma and 5pi
67sigma and 3 PI
8 sigma and 2 pi
6 sigma and 4 pi

Solution :`underset("1-butene, 3-yne")(H underset(sigma)-overset(H)overset(| sigma)(C)underset(pi)overset(sigma)=overset(H)overset(|sigma)(C)overset(sigma)-Cunderset(2pi)overset(sigma)-=C overset(sigma)-H) sigma` -BOND = 7, `pi` = bonds = 3


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