Discover Biology (Sixth Core Edition)
Discover Biology (Sixth Core Edition)
6th Edition
ISBN: 9780393936735
Author: Anu Singh-Cundy, Gary Shin
Publisher: W. W. Norton & Company
Question
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Chapter 2, Problem 1SQ
Summary Introduction

Concept introduction: Atoms are the small, indivisible particles of matter. Hence, they are particulate in nature. Matter also exists in waves, in nature. All matter is made up atoms that are composed of protons, neutrons, and electrons.

Expert Solution & Answer
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Answer to Problem 1SQ

Correct answer: The neutral atoms of a single element all have the same number of electrons. Hence, option a. is the correct answer.

Explanation of Solution

Reasons for the correct statement:

Option a. is given as “all have the same number of electrons”. Electrons are negatively charged. Nucleus of the atom consists of protons and neutrons. Protons are positively charged. When the number of protons is equal to the number of electrons, the atoms will be neutral. Hence, option a. is the correct answer.

Reasons for the incorrect statements:

Option b. is given as “can form linkages only with other atoms of the same element”. Neutral atoms also form linkages with other atoms. Hence, option b. is incorrect.

Option c. is given as “can have a different number of electrons”. Neutral atoms have the same number of protons and electrons. Hence, option c. is incorrect.

Option d. is given as “can never be part of a chemical compound”. Neutral atoms also form a part of chemical compounds. Hence, option d. is incorrect.

Therefore, options b., c., and d. are incorrect.

Conclusion
Neutral atoms have the same number of protons and electrons.

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