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Constitutional Isomers
ISOMERS
  • Same structural formula with different order / spatial arrangement of atoms
  • Constitutional isomers: different order of attachments but same formula
  • Gyceraldehyde and dihydroxyacetone are constitutional isomers
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Constitutional Isomers

Isomers
  • Definition: a molecule that has the same structural formula as another molecule, but has a different order or a different spatial arrangement of atoms.
  • Isomers can be divided into two broad categories:
    • Constitutional isomers, which have a different order of attachments but the same formula;
    • Stereoisomers, which have the same order of attachments but different spatial arrangements.

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