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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<sup>+</sup> and the anion is O<sup>2-</sup>.
For 'Fe<sup>2+</sup> PO<sub>4</sub><sup>3-</sup>', the cation is Fe<sup>2+</sup> and the anion is PO<sub>4</sub><sup>3-</sup>.
For 'Al<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>', the cation is Al<sup>3+</sup> and the anion is SO<sub>4</sub><sup>2-</sup>.
For 'Copper(II) nitrate', the cation is Cu<sup>2+</sup> and the anion is NO<sub>3</sub><sup>-</sup>.

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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
Open Question
Calculate the value of the silver in the American Silver Eagle coin, assuming its thickness is uniform, given that it has a diameter of 41 mm, a thickness of 2.5 mm, a silver density of 10.5 g/cm3, and the approximate market price of silver is $0.51 per gram.
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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Open Question
Name each of the following chlorides. Assuming that the compounds are ionic, what charge is associated with the metallic element in each case? (a) AgCl (b) TiCl₄ (c) IrCl₃ (d) LiCl.
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
Consider a sample of calcium carbonate in the form of a cube measuring 2.005 in. on each edge. If the sample has a density of 2.71 g>cm3, how many oxygen atoms does it contain?
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Textbook Question

Cyclopropane is an interesting hydrocarbon. Instead of having three carbons in a row, the three carbons form a ring, as shown in this perspective drawing (see Figure 2.18 for a prior example of this kind of drawing):

Cyclopropane was at one time used as an anesthetic, but its use was discontinued, in part because it is highly flammable. (a) How does it differ from that of propane?

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