Question

what is chiral atom​

Answer 1

An asymmetric carbon atom (chiral carbon) is a carbon atom that is attached to four different types of atoms or groups of atoms.

Answer 2

What is chiral carbon?

A chiral carbon is carbon atom attached to four different atoms or group of atoms. It is asymmetric.

Here the carbon in the centre is a chiral carbon because it is attached to 4 completely different groups.

The carbon in CH3 however cannot be a chiral carbon since it is attached with 3 hydrogen atoms that is same atom.

Also the carbon in CO2H isn't chiral. Though it is attached to different groups of atom but it is attached to only 3 group of atoms and not 4. Hence it is not considered chiral.

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