Total number of steroisomers possible for 4-chloropent-2-ene is
2
3
5
4
1CH3 − 2CH = 3CH − 4CH|Cl − 5CH3
2 & 3 carbons exhibit geometrical isomers and 4th carbon exhibits opitcal isomerism making total isomers of 4.2 geometrical and 2 optical isomers.