4.1 steroisomerism

Question 1

Structural Isomerism

Answer 1

Same molecular formula, different atom arrangement.

Question 2

Chain Isomerism

Answer 2

Isomers differ in straight or branched chains.

Question 3

Stereoisomerism

Answer 3

Same structural formula, different spatial arrangement of atoms

Question 4

E-Z Isomerism

Answer 4

Type of stereoisomerism in alkenes due to PI bond restricting rotation.

Question 5

E-Isomer

Answer 5

Priority atoms on opposite sides of double bond.

Question 6

Z-Isomer

Answer 6

Priority atoms on the same side of double bond.

Question 7

Optical Isomerism

Answer 7

Different effects on plane polarized light.

Question 8

Enantiomers

Answer 8

are non-superimposable mirror images of each other rotating the plane of polarised light in opposite directions

Question 9

Chiral Centre

Answer 9

Atom in a molecule boned to 4 different atoms or groups.

Question 10

Optical Activity

Answer 10

Occurs in molecules that possess chiral centres these molecules rotate the plane of polarised light.

Question 11

Racemic Mixture

Answer 11

(equimolar solution of two enantiomers) shows no optical rotation