Geometric isomerism, also known as cis-trans isomerism, is one type of stereoisomerism.
Cis-trans isomers have identical molecular formulas and the atoms are bonded together in the same order, but they have different arrangements in space.
Cis-trans isomers are different compounds, so they have different physical and chemical properties.
Cis-trans isomerism in cycloalkanes
Cis-trans isomerism in alkenes
Cis-trans isomers cannot be converted into each other by spinning around the C-C bonds. In the cycloalkanes the ring formation prevents this, while in the alkenes it is prevented by the double bond.
Stereoisomers have identical molecular formulae, the atoms are bonded together in the same succession, but in different position in the space.
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ISOMERS
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OPTICAL ISOMERS
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