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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 5, Problem 16E
Textbook Problem
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Draw Lewis structures for each of the following elements. Which two elements are most chemically stable?

a . Br b . S c . Kr d . He

Interpretation Introduction

Interpretation:

The electron dot structures for the given elements are to be drawn and the two chemically stable elements are to be identified.

Concept introduction:

 Lewis dot structure is used to represent the molecules.

 In Lewis dot structure, the valence electrons of the main group element are represented by dots.

 Structures with octets (eight dots) or duets (two dots) are considered as stable configurations.

 Elements having configurations very close to an octet or a duet, are very reactive in nature.

Explanation of Solution

a) Br

Bromine has seven valence electrons. Hence, its Lewis structure is represented as follows:

Bromine has seven valence electrons and hence, it is very reactive.

b) S

Sulphur has six valence electrons. Hence, its Lewis structure is represented as:

Sulphur has six valence electrons and hence it is reactive.

c) Kr

Krypton has eight valence electrons. It is a noble gas. Therefore, it is chemically stable

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Chapter 5 Solutions

Chemistry In Focus
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