Name the following ionic compounds: (f) Cr(NO 3 ) 3

Everyone were asked to provide the name for the following compound, as we can see right here. We have aluminum, which has a plus three charge, And we have our form eight ion, which has a -1 charge. And this is why we have a subscript of three written right here. So when we name this, this is actually going to be aluminum since aluminum is our metal and for mate, since this is our form eight ion. So our complete name is aluminum for mate. So I hope this made sense and let us know if you have any questions.

Ch.2 - Atoms, Molecules, and Ions

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Brown 15th Edition

Ch.2 - Atoms, Molecules, and Ions

Problem 72f

Chapter 2, Problem 72f

Name the following ionic compounds: (f) Cr(NO₃)₃

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Identify the cation and the anion in the compound. The cation is Cr (chromium) and the anion is NO3 (nitrate).

Determine the charge of the anion. The nitrate ion (NO3) has a charge of -1.

Since there are three nitrate ions, the total negative charge is -3.

To balance the charges, the chromium cation must have a charge of +3.

Name the compound by stating the name of the cation followed by the name of the anion. Include the charge of the cation in Roman numerals in parentheses.

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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 when atoms transfer electrons, resulting in the formation of positively charged cations and negatively charged anions. These oppositely charged ions attract each other, creating a stable compound. Understanding the nature of ionic bonds is essential for naming and writing formulas for ionic compounds.

Nomenclature of Ionic Compounds

The nomenclature of ionic compounds involves specific rules for naming the cations and anions. Typically, the cation retains its elemental name, while the anion's name is derived from its elemental name, often modified with an '-ide' suffix for simple anions. For transition metals, the oxidation state is indicated using Roman numerals.

Polyatomic Ions

Polyatomic ions are ions composed of two or more atoms covalently bonded together, which carry a net charge. They play a crucial role in ionic compounds, as they can replace simple anions in compound formulas. Recognizing common polyatomic ions, such as nitrate (NO3-) and chromate (CrO4^2-), is vital for correctly naming and writing formulas for ionic compounds.