5A.2 Geometric isomersim

Question 1

what are stereoisomers

Answer 1

they are compounds with the same structural (and molecular formula) but the atoms or group are arranged differently in three dimensions

Question 2

what are the two types of stereoisomers

Answer 2

1. geometric

2. optical

Question 3

what are geometric isomers

Answer 3

they are compounds containing double carbon bonds with atoms or groups attached at different positions

Question 4

why cant we represent geometrically isomers with a structural formula (straight line)

Answer 4

because we need to show the 120 bond angle

Question 5

what are the two different arrangements for geometric isomers

Answer 5

trans - across

cis - same side

Question 6

how do geometric isomers work only with alkenes

Answer 6

because alkenes have a double bond that would restrict the rotation around the double bond leaving the groups attached to the carbon double bond in one place while alkanes the groups can rotate freely

Question 7

why can’t cis-trans naming system works

Answer 7

because 4 atoms can be attached to the carbon double bond

Question 8

how do you use the e-z naming system

Answer 8

1,. find the mane of the compound

2. find which atom has priority on each side of the carbon double bond (the higher the atomic number the higher the priority
3. if the priority atom are across each other they are E-isomer if the are beside each other it is a z isomer