1.

How many chiral stereoisomers can be drawn for 2 - bromo - 3 - chlorobutane ?

Answer»

2<BR>3
4
5

Solution :2-bromo-3-chloro-butane has 2 CHIRAL carbon atoms, hence has `2^(2) = 4` OPTICAL ISOMERS.
`{:(""Br" "Cl),("|""|"),(CH_(3)-C-C-CH_(3)),("|""|"),(""H""H):}`


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