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Mark repeatedly failed at school and was retained twice. He began to believe that nothing he did would improve his grades, so he gave up easily on assignments and tests and eventually dropped out of school in the tenth grade. Mark's school experience illustrates the concept of
Enantiomer
Molecules that are mirror images of each other and cannot be superimposed onto each other, commonly found in chiral molecules.
Diastereomers
Non-mirror-image stereo isomers that have varying physical and chemical properties from each other.
Stereocenters
Chiral centers in a molecule, points at which the molecule can adopt different spatial arrangements leading to different stereoisomers.
Stereogenic Centers
Atoms within a molecule that are bonded to four different substituents, giving rise to stereoisomerism.
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