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Ch.2 - Atoms, Molecules, and Ions
Chapter 2, Problem 107a

Fill in the blanks in the following table:
Cation Anion Formula Name
Lithium oxide
Fe2+ PO43-
Al2(SO4)3
Copper(II) nitrate
Cr3+ I
MnClO2
Ammonium carbonate
Zinc perchlorate
Complete the first column of the table.

Verified step by step guidance
1
Identify the cation and anion for each compound.
For 'Lithium oxide', the cation is Li+ and the anion is O2-.
For 'Fe2+ PO43-', the cation is Fe2+ and the anion is PO43-.
For 'Al2(SO4)3', the cation is Al3+ and the anion is SO42-.
For 'Copper(II) nitrate', the cation is Cu2+ and the anion is NO3-.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Ionic Compounds

Ionic compounds are formed from the electrostatic attraction between cations (positively charged ions) and anions (negatively charged ions). They typically consist of a metal and a non-metal, where the metal donates electrons to become a cation, while the non-metal accepts electrons to become an anion. Understanding the formation and naming conventions of these compounds is essential for completing the table.
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Ionic Compounds Naming

Nomenclature of Ions

The nomenclature of ions involves specific rules for naming cations and anions. Cations are usually named after their parent element, often with the addition of a Roman numeral to indicate their charge, while anions typically have names derived from their parent element with suffixes like '-ide', '-ate', or '-ite' depending on their composition. Familiarity with these naming conventions is crucial for accurately filling in the table.
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Chemical Formulas

Chemical formulas represent the composition of ionic compounds, indicating the types and ratios of ions present. The formula is derived from the charges of the cations and anions, ensuring that the overall charge of the compound is neutral. Understanding how to derive and interpret these formulas is key to completing the first column of the table correctly.
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Skeletal Formula
Related Practice
Textbook Question

The first atoms of seaborgium (Sg) were identified in 1974. The longest-lived isotope of Sg has a mass number of 266. (b) Atoms of Sg are very unstable, and it is therefore difficult to study this element's properties. Based on the position of Sg in the periodic table, what element should it most closely resemble in its chemical properties?

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Textbook Question

From the molecular structures shown here, identify the one that corresponds to each of the following species: (a) chlorine gas; (b) propane; (c) nitrate ion; (d) sulfur trioxide; (e) methyl chloride, CH3Cl.

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Textbook Question

Fill in the blanks in the following table:

Cation Anion Formula Name

Lithium oxide

Fe2+ PO43-

Al2(SO4)3

Copper(II) nitrate

Cr3+ I

MnClO2

Ammonium carbonate

Zinc perchlorate

Complete the third column of the table.

Complete the fourth column of the table.

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Textbook Question

Elements in the same group of the periodic table often form oxyanions with the same general formula. The anions are also named in a similar fashion. Based on these observations, suggest a chemical formula or name, as appropriate, for each of the following ions: (a) BrO4- (b) SeO32- (c) arsenate ion

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Textbook Question

Elements in the same group of the periodic table often form oxyanions with the same general formula. The anions are also named in a similar fashion. Based on these observations, suggest a chemical formula or name, as appropriate, for each of the following ions: (d) hydrogen tellurate ion.

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