How many structural isomers and stereoisomers of bromopiperidine are possible?
b. How many stereoisomers of 4-chlorocyclo-hexane are possible?
c. How many optically active and inactive isomers of `2,3,4,5`- tetrachloroadipic acid are possible?
d. How many meso diastereomers of `C_(6)H_(12)Br_(2)` are possible
e. How many optically active inactive isomers of `1,2,3-`trimethylcyclohexane are possible?

Explanation

Five isomers, one achiral (meso) and two pairs of enantiomers.
a.
b. Tow, a pair of enantimoers.

Number of chiral centres `=4` (same terminal group)
`O.A.I= 2^(n)=2^(4-1)=2^(3)=8`
`O.I.A=("meso form")= 2^((n-2)//2)=2^((4-2)//2)=2^(1)=2`
Total isomers`= 10`
d. Three meso diastereomers:

e. Four, two meso and one pair of enantiomers