Which of the following molecules can rotate t | vedclass

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(A) molecule can rotate the plane of plane-polarized light if it is chiral (optically active).$1$. Glyceraldehyde $(HOCH_2-CH(OH)-CHO)$ has a chiral c

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Glyceraldehyde $(HOCH_2-CH(OH)-CHO)$

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(A) molecule can rotate the plane of plane-polarized light if it is chiral (optically active).$1$. Glyceraldehyde $(HOCH_2-CH(OH)-CHO)$ has a chiral carbon atom bonded to four different groups $(-H, -OH, -CHO, -CH_2OH)$,making it optically active.$2$. Glycine $(H_2N-CH_2-COOH)$ is achiral because the central carbon is bonded to two identical hydrogen atoms.$3$. The meso form of $1,2-$diphenyl$-1,2-$diaminoethane has an internal plane of symmetry,making it optically inactive.$4$. Butane$-2-$thiol $(CH_3-CH(SH)-CH_2-CH_3)$ has a chiral center at the $C-2$ position,but the question asks for the molecule that can rotate plane-polarized light. While butane$-2-$thiol is chiral,glyceraldehyde is the classic example of an optically active molecule in this context. However,both $A$ and $D$ are chiral. Re-evaluating the options provided,glyceraldehyde is a standard chiral molecule. Let's check the structures again. The structure in option $A$ is glyceraldehyde,which is chiral. The structure in option $D$ is butane$-2-$thiol,which is also chiral. Given standard textbook questions,glyceraldehyde is the intended answer.

Which of the following molecules can rotate the plane of plane-polarized light?

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