Chemistry - STEREO ISOMERISM Question with Solution | TestHub
Identify which of the compounds show geometrical isomerism?
1. 
2. 
3. 
4. 
5. 
6. 
7. 
8. 
9. 
10. 
11. 
12. 
Options:
Answer:
Solution:
1. But-2-ene : two different groups on each C : shows G.I. 2. 2-Methylbut-2-ene : two CH3 on one carbon : no. 3. 1-Bromo-2-chloroethene : shows G.I. 4. Cyclohexane : unsubstituted, no stereogenic element : no. 5. 1-Chloro-2-methylcyclopropane : cis-trans forms exist : shows G.I. 6. Hexa-2,4-diene : both double bonds stereogenic : shows G.I. 7. 2-Methylpropene : two CH3 on one carbon : no. 8. 1-Chloro-1,2-difluoroethene : each carbon bears two different atoms : shows G.I. 9. 1,1-Dimethylcyclobutane : both CH3 on one carbon : no. 10. 1-Bromopropene : shows G.I. 11. But-2-yne : a triple bond is linear : no. 12. 1,3-Dimethylcyclopentane : cis-trans forms exist : shows G.I.
Ans. Show G.I. : 1, 3, 5, 6, 8, 10, 12. Do not : 2, 4, 7, 9, 11.
