Q.
Which of the following correspond $(s)$ has '$Z$' configuration?
BITSATBITSAT 2008
Solution:
When the groups with higher priority (ie, with high atomic number) are present on same side of double bond, then the configuration is $Z$ but when present on opposite side of double bond, the configuration is $E$. (Priority: $Br > CI$ and $CH _{3}> H$ ) Hence, compound (i) and (iii) have $(Z)$ configuration.
