stereoisomerism

Question 1

what is e/z isomerism

Answer 1

isomerism only occurring in compounds with a C=C bond

Question 2

why does stereoisomerism around double bonds arise

Answer 2

rotation around the double bond is restricted and the groups attached to each carbon atom are therefore fixed relative to each other

Question 3

what are the conditions for e/z isomerism

Answer 3

C=C bond, different group attached to each carbon atom of the double bond

Question 4

what is cis-trans isomerism

Answer 4

e/z isomerism where the molecules must have a C=C bond and each carbon in the double bond must be attached to 2 different groups, one of the attached groups on each carbon atom of the double bond must be the same