The number of asymmetric centers present in the given structure of Mevacor has to be determined. Concept introduction: Stereoisomers are isomers which have different spatial arrangement in spite of same bond connectivity. Stereoisomers are due to the presence of stereocenter. Stereocenter may be an atom axis (bond) or plane from which interchanging of two groups leads to stereoisomers. Asymmetric center is a stereocenter which arises to hydrocarbons if the carbon is bonded to four different groups.

Question

Lewis Structure, Hybridization & Molecular Geometry a) Draw the Lewis Structure of the molecules; Label the hybridization of each carbon atom; Predict the approximate molecular geometry around each carbon atom. CH3CHO CH3CN b) Draw the Lewis Structure of Nitromethane; Predict the approximate molecular geometry around the nitrogen atom. CH3NO2 c) Draw the Lewis Structure; Label the hybridization of the boron atom; Predict the approximate molecular geometry. BF3 BF4

Answer 1

Question

Chapter 4, Problem 69P

Interpretation Introduction

Interpretation:

The number of asymmetric centers present in the given structure of Mevacor has to be determined.

Concept introduction:

Stereoisomers are isomers which have different spatial arrangement in spite of same bond connectivity. Stereoisomers are due to the presence of stereocenter. Stereocenter may be an atom axis (bond) or plane from which interchanging of two groups leads to stereoisomers.

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

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