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ISOMERISM
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ISOMERISM
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| Compounds having same molecular formula but different structural formula and differ from each other in physical and chemical properties are known as “Isomers” and this phenomenon is called “Isomerism”. Isomerism is due to the difference in the arrangement of atoms in molecules. | |||
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TYPES
OF ISOMERISM
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Isomerism
can broadly be divided into two main classes.
STRUCTURAL ISOMERISM. STEREO
ISOMERISM. |
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STRUCTURAL
ISOMERISM
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| For latest information , free computer courses and high impact notes visit : www.citycollegiate.com | |||
| When
isomerism is due to the difference in the arrangement of atoms within the
molecule, without any reference to space, the phenomenon is
referred to as “Structural Isomerism”. Structural Isomerism is of five types: 1. Chain Isomers. 2. Position Isomers. 3. Functional Isomers. 4. Metamerism. 5. Tautomerism. |
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CHAIN
ISOMERISM
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| Chain
isomers have same molecular formula but differ in the order in which C-atoms
are bonded to each other. Example: |
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(n-butane)
Iso-butane
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POSITION
ISOMERISM
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| Isomerism
caused by the difference in the position of functional group in the same
chain is termed as position isomerism. Example: |
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FUNCTIONAL
ISOMERISM
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| Functional
isomers have same molecular formula but different functional group. Example: |
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Ethyl
Alcohol
Dimethyl
Ether  |
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METAMERISM
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| This
type of isomerism is due to the unequal distribution of carbon atoms on
either side of functional group. Metamerism belongs to same
homologous series. Example: |
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TAUTOMERISM
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| It is a special type of functional isomerism in which the isomers are in dynamic equilibrium with each other. | |||
| For latest information , free computer courses and high impact notes visit : www.citycollegiate.com | |||