Answer
b. A different number of electrons and protons.
Work Step by Step
An ion is an atom, in which its total number of electrons is not equal to the total number of protons, giving the atom a net positive or negative electrical charge.
Biology: The Unity and Diversity of Life (14th Edition)
by Starr, Cecie; Taggart, Ralph; Evers, Christine; Starr, Lisa
Published by
Brooks/Cole Publishing Co.
ISBN 10:
1305073959
ISBN 13:
978-1-30507-395-1
Chapter 2 - Self-Quiz - Page 35: 5
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