Isomers

Structural isomers

Have the same molecular formulas but a diffrent structural formula

Chain isomers

carbon skeletons are diffrent

positional isomers

functional group is attachted to a diffrent carbon atom

functional group isomers

same atoms arranged into diffrent functional groups

sterioisomers

Have the same structural formula but a diffrent arrangment in space due to the lack of rotation around the carbon-carbon double bond

E-isomers

The highest proirity groups are on opposite sides of the carbon-carbon double bond

Z-isomers

The highest priority groups are on the same side of the carbon-carbon double bond

Cis-isomer

The identical H groups are on the same side of the carbon-carbon double bond

trans-isomer

The identical H groups are on opposite sides of the carbon-carbon double bond