Question

$\text{Cyclopentane}\underset{h\nu }{\overset{C{l}_2\text{(excess)}}{\to }}$
How many dichloro products (including stereoisomers) are possible in the given reaction?

• A. $7$
• B. $5$
• C. $10$
• D. $3$

Answer 1

The correct option is A $7$


Gemdichlorocyclopentane is optically inactive.
Cis-1,2-dichloropentane and cis-1,3-dichloropentane are optically inactive due to plane of symmetry.
Trans-1,2-dichloropentane and trans-1,3-dichloropentane are optically active and exist as pair of enantiomers.