Write the name of each of the following ionic substances,...

Write the name of each of the following ionic substances, using the system that includes a Roman numeral to specify the charge of the cation. a. $\mathrm{FeBr}_{2}$ b. $\cos$ c. $\mathrm{Co}_{2} \mathrm{S}_{3}$ d. $\mathrm{SnO}_{2}$ e. $\mathrm{Hg}_{2} \mathrm{Cl}_{2}$ f. $\mathrm{HgCl}_{2}$

Write the name of each of the following ionic substances, using the system that includes a Roman numeral to specify the charge of the cation.
a. $\mathrm{FeBr}_{2}$
b. $\cos$
c. $\mathrm{Co}_{2} \mathrm{S}_{3}$
d. $\mathrm{SnO}_{2}$
e. $\mathrm{Hg}_{2} \mathrm{Cl}_{2}$
f. $\mathrm{HgCl}_{2}$

Key Concepts

Charge Balance in Ionic Compounds

Understanding charge balance is key to writing the correct formula for ionic compounds. The overall neutrality of an ionic compound is maintained by the proper ratio of positively charged cations to negatively charged anions, and this same understanding supports accurate nomenclature by reflecting the underlying stoichiometry.

Roman Numeral Notation in Nomenclature

To communicate the specific oxidation state of a metal, a Roman numeral is placed in parentheses immediately after the metal’s name. This notation is crucial for distinguishing between different ionic compounds of the same metal that may form due to variable oxidation states.

Ionic Compound Nomenclature

This concept involves the systematic naming of compounds composed of ions. It requires identifying the cation (usually a metal) and the anion (generally a nonmetal or polyatomic ion), then combining their standard names based on established rules. It ensures that the compound's formula can be directly used to derive its name and vice versa.

Transition Metal Oxidation States

Many transition metals can exist in multiple oxidation states, which affect their chemical behavior and properties. When naming compounds that include such metals, it is essential to specify the particular oxidation state, as different states lead to different reactivities and compound identities.

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