Which of the following amino acids is not opt | vedclass

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Question

(A) An amino acid is optically active if it contains a chiral carbon atom (an asymmetric carbon atom bonded to four different groups). In $Glycine$ $(

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Glycine

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(A) An amino acid is optically active if it contains a chiral carbon atom (an asymmetric carbon atom bonded to four different groups). In $Glycine$ $(NH_2-CH_2-COOH)$,the central carbon atom is bonded to two hydrogen atoms. Since two groups attached to the central carbon are identical,it is achiral and therefore not optically active. All other amino acids listed ($Valine$,$Leucine$,$Isoleucine$) contain a chiral center and are optically active.

Which of the following amino acids is not optically active?

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