Allotropes Of Carbon

Step 1: Chiral Molecule
A molecule is chiral if it has no plane of symmetry and if it has a non-superimposable mirror image (i.e., it can have an enantiomer).
Step 2: Explanation of the Compounds
Compound A: This molecule has a chiral center due to the different substituents attached to the central carbon, making it chiral.
Compound B: It also has a chiral center and is chiral because the structure does not have a plane of symmetry.
Compound C: While the molecule might have substituents, the symmetry of the structure (if it has a plane of symmetry) can make it achiral.
Step 3: Conclusion
Thus, compounds A and B are chiral, and C is not.