   Chapter 9, Problem 9.75QP General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
ISBN: 9781305580343

Solutions

Chapter
Section General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
ISBN: 9781305580343
Textbook Problem

Write a Lewis formula for each of the following, assuming that the octet rule holds for the atoms. Then obtain the formal charges of the atoms. a O3 b CO c HNO3

(a)

Interpretation Introduction

Interpretation:

The Lewis formulas for given molecules, the octet rule holds for the atoms and the formal charges of the atoms have to be drawn.

Concept introduction:

Lewis structure otherwise known as Lewis dot diagrams or electron dot structures that show the bond between atoms and lone pairs of electrons that are present in the molecule. Lewis structure represents each atom and their position in structure using the chemical symbol.  Excess electrons forms the lone pair are given by pair of dots, and are located next to the atom.

Formal charge=

[valence electrons] – [electrons in lone pairs + 1/2 the number of bonding electrons]. According to Octet rule eight electrons in the outer most shell that atoms is most stable arrangement in other atoms have less than eight electrons.

Explanation

The Lewis formula for O3 molecule

The better Lewis formula can be given below

The outer most shell electrons is = (3×6)=18 then the O3 molecule skeleton is

Since this is two electrons short of an octet, move a pair of electrons from one of the outer oxygen atoms to give an oxygen-oxygen double bond.

The structure would have the double bond written between the left and central oxygen atoms

(b)

Interpretation Introduction

Interpretation:

The Lewis formulas for given molecules, the octet rule holds for the atoms and the formal charges of the atoms have to be drawn.

Concept introduction:

Lewis structure otherwise known as Lewis dot diagrams or electron dot structures that show the bond between atoms and lone pairs of electrons that are present in the molecule. Lewis structure represents each atom and their position in structure using the chemical symbol.  Excess electrons forms the lone pair are given by pair of dots, and are located next to the atom.

Formal charge=

[valence electrons] – [electrons in lone pairs + 1/2 the number of bonding electrons]. According to Octet rule eight electrons in the outer most shell that atoms is most stable arrangement in other atoms have less than eight electrons.

(c)

Interpretation Introduction

Interpretation:

The Lewis formulas for given molecules, the octet rule holds for the atoms and the formal charges of the atoms have to be drawn.

Concept introduction:

Lewis structure otherwise known as Lewis dot diagrams or electron dot structures that show the bond between atoms and lone pairs of electrons that are present in the molecule. Lewis structure represents each atom and their position in structure using the chemical symbol.  Excess electrons forms the lone pair are given by pair of dots, and are located next to the atom.

Formal charge=

[valence electrons] – [electrons in lone pairs + 1/2 the number of bonding electrons]. According to Octet rule eight electrons in the outer most shell that atoms is most stable arrangement in other atoms have less than eight electrons.

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