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Applicable to questions about the spatial arrangement of atoms in a molecule and how they affect its physical or chemical properties.

8 votes

Number of stereoisomers and symmetry of pentane-2,3,4-triol

It is easier to compare molecules is you rotate them all into a comparable position. Say 1 with the central C-3 hydroxyl group out of the plane of the screen/page like in 1, 4, 5 and 7. So when we r …
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