Question 10 of 32intermediate🔧 ApplyShort Answer2 marks
Which of the following compounds will show cis-trans isomerism? (i) (CH₃)₂C = CH – C₂H₅ (ii) CH₂ = CBr₂ (iii) C₆H₅CH = CH – CH₃ (iv) CH₃CH = CClCH₃
(i)
(ii)
(iii)
(iv)
Explanation
Geometrical or cis-trans isomerism is shown by alkenes of the types XYC = CXZ and XYC = CZW, where different groups are attached to each doubly bonded carbon atom. In structures (i) and (ii), two identical groups are attached to one of the doubly bonded carbon atoms, so they cannot exhibit cis-trans isomerism.