The Lewis structures of the given molecules are to be drawn and information of types of bond, polar or nonpolar, and shape of molecules are to be given. Concept introduction: Lewis structures represent the arrangement of valence electrons of the atoms in a molecule. The electron domain is the bond pair and lone pair of electrons around the central atom. According to VSEPR, electron domains repel each other and arrange themselves as far apart as possible, in space. The order of repulsion is lone pair-lone pair > lone pair – bond pair > bond pair-bond pair. Molecular geometry is the arrangement of bonded atoms. If no lone pairs are present, the molecular geometry is theidentical to the electron domain geometry. The molecular shape of a molecule tells whetherit is polar or not. When identical bonds are symmetrically placed around a central atom, the molecule is nonpolar, even if the bonds are polar.

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Chapter 9, Problem 80AP

Interpretation Introduction

Interpretation:

The Lewis structures of the given molecules are to be drawn and information of types of bond, polar or nonpolar, and shape of molecules are to be given.

Concept introduction:

Lewis structures represent the arrangement of valence electrons of the atoms in a molecule.

The electron domain is the bond pair and lone pair of electrons around the central atom.

According to VSEPR, electron domains repel each other and arrange themselves as far apart as possible, in space. The order of repulsion is lone pair-lone pair > lone pair – bond pair > bond pair-bond pair.

Molecular geometry is the arrangement of bonded atoms. If no lone pairs are present, the molecular geometry is theidentical to the electron domain geometry.

The molecular shape of a molecule tells whetherit is polar or not.

When identical bonds are symmetrically placed around a central atom, the molecule is nonpolar, even if the bonds are polar.

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