what is isomerism...
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An isomer of a molecule has the same number of atoms of each element, but has a different arrangement of the atoms. It has the same molecular formula as the other molecule, but with a different chemical structure
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Isomerism is the existence of molecules that have the same formula but differ in chemical and physical properties.
There are two main forms of isomerism: structural isomerism (or constitutional isomerism) and stereoisomerism (or spatial isomerism).
In structural isomers, the atoms and functional groups are joined together in different ways. Structural isomers may or may not belong to the same functional group.
In stereoisomers the bond structure is the same, but the geometrical positioning of atoms and functional groups in space differs.
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