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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
Publisher: Cengage Learning
ISBN: 9781305389892
BuyFind

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
Publisher: Cengage Learning
ISBN: 9781305389892

Solutions

Chapter
Section
Chapter 2, Problem 3TYK
Textbook Problem
644 views

The chemical activity of an atom:

a. depends on the electrons in the outermost energy level.

b. is increased when the outermost energy level is filled withelectrons.

c. depends on its 1s but not its 2s or 2p orbitals.

d. is increased when valence electrons completely fill the outerorbitals.

e. of oxygen prevents it from sharing its electrons with otheratoms.

Expert Solution
Summary Introduction

Introduction:

An atom consists of protons, neutrons, and electrons. Protons and neutrons are present in the nucleus but electrons are present outside the nucleus. Electrons are arranged around the nucleus in three-dimensional space called energy levels or shells. These shells are composed of orbitals.

Explanation of Solution

Justification/Explanation for the correct answer:

Option (a) states that it depends on electrons in outermost energy level. The electrons present in the outermost shell in an atom are called valence electrons and the shell is called the valence shell. The chemical activity of an element depends on the electrons in the outermost energy level.

The valence shell is different for different elements and depends on the number of electrons present in the atom. An atom with one, two, or three valence electrons tends to donate the electrons to complete their valence shell while those with more than three electrons either share or lose their electrons for the same. Hence, option (a) is correct.

Justification for the incorrect answers:

Option (b) states that it is increased when the outermost energy level is filled with electrons. The chemical activity decreases when the outermost energy level is filled with electrons as it is completely stable...

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Chapter 2 Solutions

Biology: The Dynamic Science (MindTap Course List)
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