Molecules whose mirror image is non superimposable over them are known as chiral. Which of the following molecules is chiral in nature?

The structure of 2-Bromobutane is shown below. All the groups attached to the central carbon atom are different, making the mirror image of molecule non superimposable over original molecule.



The structure of 1-Bromobutane is given below. There are only three groups different from each other, hence the molecule is not chiral in nature.



The structure of 1-Bromopropane is given below. Again, there are only three groups different from each other, and the molecule is not chiral.



The structure of 2-Bromopropan-2-ol, given below, again has two similar species and thus cannot be chiral.


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