The number of sigma `(sigma)` and pi `(pi)` bonds present in 1, 3, 5, 7-octatetraene respectively are 14 and 3 17 and 4 16 and 5 15 and 4

Options

A. 14 and 3
B. 17 and 4
C. 16 and 5
D. 15 and 4

Answer

B

Explanation

The structure of 1, 3, 5, 7-octatetraene is as
`H_(2)overset(8)C=overset(7)CH-overset(6)CH=overset(5)CH-overset(4)CH=overset(3)CH-Hoverset(2)C=overset(1)CH_(2)`

(`because` Each single bond is a `sigma` bond and a double bond contains one `sigma` and one `pi` bond).
`therefore` The number of `sigma and pi` bonds are respectively 17 and 4.