Several alkene compounds are given below. indicate if each compound can exist as stereoisomers.

The compounds are missing. It will be helpful instead if you know what are stereoisomers. Two molecules are described as stereoisomers of each other if they are made of the same atoms, connected in the same sequence, but the atoms are positioned differently in space in which the difference between two stereoisomers can only be seen when the three dimensional arrangement of the molecules is shown.