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20 Μαΐ 2018 · Naming Ions. The name of a monatomic cation is simply the name of the element followed by the word ion. Thus, Na + is the sodium ion, Al 3 + is the aluminum ion, Ca 2 + is the calcium ion, and so forth. We have seen that some elements lose different numbers of electrons, producing ions of different charges (Figure 3.3).
19 Σεπ 2022 · This module describes an approach that is used to name simple ionic and molecular compounds, such as NaCl, CaCO 3, and N 2 O 4.
19 Αυγ 2020 · To use the rules for naming ionic compounds. After learning a few more details about the names of individual ions, you will be a step away from knowing how to name ionic compounds. This section begins the formal study of nomenclature, the systematic naming of chemical compounds.
Rules for Writing the Formulas of Ionic Compounds. In an ionic compound, the positive charges balance the negative charges. You can use this balance to find the ratio of positive ions to negative ions. Then use the ratio to write subscripts in the formula. Table 3.4 gives the rules and two examples.
Use the rules for naming ionic compounds. After learning a few more details about the names of individual ions, you will be a step away from knowing how to name ionic compounds. This section begins the formal study of nomenclature, the systematic naming of chemical compounds.
Keys for Single Element Ions (like Na + , Cl-, Ca 2+, N 3-): To name positive ions (called cations) write the name as found on the Periodic Table and add the word ' ion '. For the negative ions (called anions) use the name from the Periodic Table but replace the ending with ‘ide’.
The best way to learn how to name ionic compounds is to work through a few examples, referring to Figure 2.10 "Naming an Ionic Compound", Table 2.2 "Some Common Monatomic Ions and Their Names", Table 2.4 "Common Polyatomic Ions and Their Names", and Table 2.5 "Common Cations of Metals That Form More Than One Ion" as needed.
