Chemistry (12th Edition)

Published by Prentice Hall
ISBN 10: 0132525763
ISBN 13: 978-0-13252-576-3

Chapter 18 - Reaction Rates and Equilibrium - 18 Assessment: 116

Answer

F- is called the fluoride ion. It is an anion because it has negative charge P-3 is called the phosphide ion. It is an anion because it has negative charge Sodium is located in Group 1A, so its ions only occur as 1+ charges. So a Roman numeral is not needed. Thus, it is called the sodium ion. It is a cation because its charge is positive. P- is called the iodide ion. It is an anion because it has negative charge O-2 is called the oxide ion. It is an anion because it has negative charge Sodium is located in Group 2A, and therefore its ions only occur as 2+ charges. So a Roman numeral is not needed. Thus, it is called the magnesium ion. It is a cation because its charge is positive.

Work Step by Step

F- is called the fluoride ion. It is an anion because it has negative charge P-3 is called the phosphide ion. It is an anion because it has negative charge Sodium is located in Group 1A, and therefore its ions only occur as 1+ charges. So a Roman numeral is not needed. Thus, it is called the sodium ion. It is a cation because its charge is positive. P- is called the iodide ion. It is an anion because it has negative charge O-2 is called the oxide ion. It is an anion because it has negative charge Sodium is located in Group 2A, and therefore its ions only occur as 2+ charges. So a Roman numeral is not needed. Thus, it is called the magnesium ion. It is a cation because its charge is positive.
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