Draw cis-trans isomers for the following compound.
`(a) 2`-chloro-`2` butene
`(b) CH_(3)-"CC"l=CH-CH_(2)CH_(3)`

Draw cis and trans isomers of the following compounds. Also write their IUPAC names : (i)CHCl =CHCl (ii) C_2H_5C CH_3 = C CH_3C_2H_5

Draw geometrical (or cis-and trans-) isomers of the following structures and give their IUPAC names. (i) C_(2)H_(5)C CH_(3)=C CH_(3)C_(2)H_(5) (ii) CH_(3)CH_(2)CH=CHCH_(2)CH_(3) Strategy: An isomer in which two identical atoms (or groups) lie on the same sides of the double bond is called as cis isomer whereas an isomers in which identical atoms ( or groups) lie on the opposite sides of the double bond is called a trans isomer.