Naming Binary Ionic Compounds

A binary compound is an inorganic compound that contains two elements. Binary compounds may contain a metal and a non-metal or two non-metals. Binary compounds are often ionic compounds. To name a binary ionic compound, name the cation first and the anion second. For example, the compound that contains sodium and chlorine is called sodium chloride. 

Binary Ionic Compounds Binary ionic compounds are ionic compounds that have just two different elements present. Examples are NaCl and Mgl2. When naming a binary ionic compound, name the metal first and then name the non-metal with the ending -ide. There are no prefixes used when naming binary ionic compounds. The names of the example above are sodium chloride and magnesium iodide. 

Binary ionic compounds are named by identifying first the positive ion and then the negative ion. The positive ion takes the same name as the element the negative ion takes the first part of its name from the element and then adds the ending -ide. For example, KBr is named potassium bromide—potassium for the K+ ion, and bromide for the negative Br ion derived from the element bromine. Figure 2.11... 

Ionic compounds containing polyatomic ions (Section 2.8) are named in the same way as binary ionic compounds First the cation is identified and then the anion. For example, Ba(N03)2 is called barium nitrate because Ba2+ is the cation and the N03 polyatomic anion has the name nitrate. Unfortunately, there is no systematic way of naming the polyatomic ions themselves, so it s necessary to memorize the names, formulas, and charges of the most common ones listed in Table 2.3. The ammonium ion (NH4+) is the only cation on the list all the others are anions. 

Binary ionic compounds are compounds composed of two monatomic ions. These usually are a metallic cation and a nonmetallic anion. When naming these compounds, there are a few rules that need to be followed ... 

These are the main rules that are used to name binary ionic compounds. In most cases, the procedure is quite simple. For example, LiCl is named lithium chloride. Lithium is a group 1A element, so its name doesn t change, and the chloride comes from adding an ide ending to... 

Binary ionic compounds contain a positive ion (cation), always written first in the formula, and a negative ion (anion). In the naming of these compounds the following rules apply ... 

A Type I binary ionic compound contains a metal that forms only one type of cation. The rules for naming Type I compounds are illustrated by the following examples ... 

The following flowchart is useful when you are naming binary ionic compounds ... 

In binary covalent compounds the element names follow the same rules as those for binary ionic compounds. 

Binary covalent compounds are formed between two nonmetals. Although these compounds do not contain ions, they are named very similarly to binary ionic compounds. 

Name the compound using procedures similar to those for naming binary ionic compounds. 

You may recall that chemists call table salt sodium chloride. In fact, they have a name for every salt. With thousands of different salts, you might think that it would be hard to remember the names of all of them. But naming salts is very easy, especially for those that are made of a simple cation and a simple anion. These kinds of salts are known as binary ionic compounds. The adjective binary indicates that the compound is made up of just two elements. 

Naming binary ionic compounds is simple. The name is made up of just two words the name of the cation followed by the name of the anion. 

Name the following binary ionic compounds. If the metal forms more than one cation, be sure to denote the charge. 

Binary ionic compounds contain metal cations and nonmetal anions. The cation is named first and the anion second. 

The preceding method is sufficient for naming binary ionic compounds containing metals that exhibit only one oxidation number other than zero (Section 4-4). Most transition metals and the metals of Groups IIIA (except Al), IVA, and VA, exhibit more than one oxidation number. These metals may form two or more binary compounds with the same nonmetal. Ta distinguish among all the possibilities, the oxidation number of the metal is indicated by a Roman numeral in parentheses following its name. This method can be applied to any binary compound of a metal and a nonmetal. 

These are the main rules that are used to name binary ionic compounds. 

To name a binary ionic compound, first write the name of the positively charged ion, usually a metal, and then add the name of the nonmetal or negatively charged ion, whose name has been modified to end in -ide. The compound formed from potassium and chlorine is called potassium chloride. Magnesium combines with oxygen to form a compound called magnesium oxide. 

When naming a binary ionic compound, this is the last step. However, because nonmetal atoms can share different numbers of electron pairs, several different compounds can be formed from the same two nonmetal elements. Thus,... 

Binary ionic compounds are named by first naming the metal element and then the non-metal element, with its ending changed to -ide. Subscripts are used in formulas to indicate how many atoms of each element are present in the compound. 

Before you can write a chemical formula from the name of a compound, you need to recognize what type of compound the name represents. For binary ionic compounds, the first part of the name is the name of a metallic cation. This may include a Roman numeral in parentheses. The anion name starts with the root of the name of a nonmetal and ends with -ide. 

Given a name or chemical formula, tell whether it represents a binary ionic compound, an ionic compound with polyatomic ion(s), a binary covalent compound, a binary acid, or an oxyacid. 

Convert between names and chemical formulas for binary ionic compounds, ionic compounds with polyatomic ion(s), binary covalent compounds, binary acids, and oxyacids. 

Given a name or chemical formula, tell whether it represents a binary ionic compound. 

Naming binary ionic compounds in which the metal forms only a single cation is not difficult. 

The rules for naming binary ionic compounds with single-cation metals are as follows ... 

Ionic compounds that contain polyatomic ions are named in the same way used to name binary ionic compounds. Attention must be paid as to whether the cation is a metal that forms a single cation or multiple cations, and the name of the polyatomic ion is that given in the table. Note how these six ionic compounds are named ... 

You may remember that the names of binary ionic compounds (two elements) always ended in -ide. The -Ide ending tells you it is a binary compound. But there are three exceptions to this rule ... 

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