Question

$1$, $3$, $5$, $7$-Octatetraene contains $X$ $\sigma$-bonds and $Y$ $\pi$-bonds. ${}^{\prime }{X}^{\prime }$ and ${}^{\prime }{Y}^{\prime }$ are

• A. $23$, $4$
• B. $17$, $4$
• C. $18$, $5$
• D. $33$, $2$

Answer 1

Answer: (B)

$C{H}_2=CH-CH=CH-CH=CH-CH=C{H}_2$
No. of $\sigma$-bonds $=17$, No. of $\pi$-bonds $=4$