General, Organic, & Biological Chemistry
General, Organic, & Biological Chemistry
3rd Edition
ISBN: 9780073511245
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
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Chapter 11.3, Problem 11.6P
Interpretation Introduction

Interpretation:

The shape of the labelled atoms in the below structure of enanthotoxin needs to be determined.

General, Organic, & Biological Chemistry, Chapter 11.3, Problem 11.6P

Concept introduction:

Shape of a molecule is determined by including only the bond pair not the lone pairs on the central atom while geometry includes both the bond pairs and lone pairs on the central atom. Valence shell electron pair repulsion theory or VSEPR theory used in chemistry as a model for the prediction of shape of various molecules by knowing the electron pairs on the central atom. There will be repulsion between the electron pairs present on central atom, so to minimize the repulsion they adopt an arrangement with minimum repulsion, thus determining molecule's shape. And by knowing the shape we can easily determine the bond angles.

The following table should be used while determining the shapes:

Number of groups Number of atomsNumber of lone pairsShapeBond angle
220Linear180°C
330Trigonal planar120°C
440Tetrahedral109.5°C
431Trigonal pyramidal109.5°C
422Bent109.5°C

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Chapter 11 Solutions

General, Organic, & Biological Chemistry

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