Chapter 4, Problem 103P

(a)

Interpretation Introduction

Interpretation:

The presence of asymmetric centers in the given compounds has to be checked.

Concept introduction:

Stereoisomers are isomers which have different spatial arrangement in spite of same bond connectivity. Stereoisomers are due to the presence of stereo center.

Asymmetric center is a stereo center which arises to hydrocarbons if the carbon is bonded to four different groups.

(b)

Interpretation Introduction

Interpretation:

The chirality of the given compounds has to be checked.

Concept introduction:

Optical activity (chirality) of a molecule is the interaction between molecule and plane-polarized light.

Molecule having asymmetric center shows optical activity except mesocompounds.

If a compound having non-superimposable mirror image, then the compound is chiral.