A molecule has one carbon-carbon double bond and four monovalent atoms or groups. how many different geometric isomers exist for this molecule?

A molecule has one carbon-carbon double bond and four monovalent atoms or groups have two isomers.

When there is different arrangement of atoms in a compound but having the save molecular formula, these are called isomers of that compound. These isomers also have different properties due to the change of arrangement of atoms or different structure.