Chemistry - STRUCTURAL ISOMERISM Question with Solution | TestHub

In propene, $\mathrm{C}{\mathrm{H}}_2=\mathrm{CH}-\mathrm{C}{\mathrm{H}}_3$, D can replace H at three structurally distinct positions : C-1 (terminal $=\mathrm{C}{\mathrm{H}}_2$), C-2 (the central CH) and C-3 (the allylic $\mathrm{C}{\mathrm{H}}_3$) $\to$ 3 isomers. In cyclopropane all carbons and hydrogens are equivalent, so only 1 deuterated product. Hence 3 and 1.