Question

How many isomers are possible in $C_3{H}_{4}C{l}_2$ (including stereo-isomers)?

• A. $4$
• B. $6$
• C. $8$
• D. $10$

Answer 1

Answer: (D)

$10$

1. $C{H}_{2}Cl-C=CHCl$ trans-1,3-dichloroprop-1-ene
2. $C{H}_{2}Cl-C=CHCl$ cis-1,3-dichloroprop-1 ene
3. $C-CCl=CHCl$ trans-1,2-dichloroprop-1-ene
4. $C-Cl=CHCl$ cis-1,2-dichloroprop-1-ene
5. $CHC{l}_2-CH=C{H}_2$ 1,1-dichloroprop-2-ene
6. $C{H}_3-CH=CC{l}_2$ 1,1-dichloroprop-1-ene
7. 1,2-dichloroprop-2-ene
8. 1,1-dichlorocyclopropane
9. cis-1,2-dichlorocyclopropane (both chlorines sticking out)
10. trans-1,2-dichlorocyclopropane (one out one to the back)