Chapter 1.7, Problem 18P

Interpretation Introduction

(a)

Interpretation: The geometry around all second-row atoms in ${\text{CH}}_{\text{3}}{\text{COCH}}_{\text{3}}$ is to be predicted with the help of its given Lewis structure.

Concept introduction: The geometry and hybridisation of an atom is determined by the number of groups around it. If the number of groups attached to an atom is $2$, then the geometry will be linear. If the number of groups attached to an atom is $3$, then the geometry will be trigonal planar. If the number of groups attached to an atom is $4$, then the geometry will be tetrahedral.

Interpretation Introduction

(b)

Interpretation: The geometry around all second-row atoms in ${\text{CH}}_{\text{3}}{\text{OCH}}_{\text{3}}$ is to be predicted with the help of its given Lewis structure.

Concept introduction: The geometry and hybridisation of an atom is determined by the number of group around it. If the number of groups attached to an atom is $2$, then the geometry will be linear. If the number of groups attached to an atom is $3$, then the geometry will be trigonal planar. If the number of groups attached to an atom is $4$, then the geometry will be tetrahedral.

Interpretation Introduction

(c)

Interpretation: The geometry around all second-row atoms in ${\text{NH}}_{\text{2}}^{-}$ is to be predicted with the help of its given Lewis structure.

Concept introduction: The geometry and hybridisation of an atom is determined by the number of group around it. If the number of groups attached to an atom is $2$, then the geometry will be linear. If the number of groups attached to an atom is $3$, then the geometry will be trigonal planar. If the number of groups attached to an atom is $4$, then the geometry will be tetrahedral.

Interpretation Introduction

(d)

Interpretation: The geometry around all second-row atoms in ${\text{CH}}_{\text{3}}\text{CN}$ is to be predicted with the help of its given Lewis structure.

Concept introduction: The geometry and hybridisation of an atom is determined by the number of group around it. If the number of groups attached to an atom is $2$, then the geometry will be linear. If the number of groups attached to an atom is $3$, then the geometry will be trigonal planar. If the number of groups attached to an atom is $4$, then the geometry will be tetrahedral.