Question

i. Z-2,3-Dideuteroeo-but-2-ene `overset("Hydrobo ration")underset("bromination")rarr`
ii.E-2,3-Dideutereo-but -2-ene `overset("Hydrobo ration")underset("bromination")rarr`
iii. 1,2-Dideutereo cyclohexene `overset("Hydrobo ration")underset("bromination")rarr`

Answer 1

`i.`
`[`Two `(-Me)` groups on the same side .`]` Erythro means two same groups on the same side and Threo means two same groups on different faces `(` sides `)`.
`ii.`
`(A)` and `(B)` are diastereomers.
`iii.`