Isomers, An Introduction


- Two compounds are considered isomers if they have the same molecular formula (i.e. the same numbers and types of atoms) but different structures.

- There are two types of isomers, structural isomers and stereoisomers .

- Two compounds are considered structural isomers is they have the same molecular formula but different connections between atoms (bonding).

- Two compounds are considered stereoisomers if they have the same molecular formula, the same connections between atoms, but different arrangements of the atoms in three dimensional space.

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