Ionic formula naming

A description of all the ingredients in the product (Give the common or IUPAC names, molecular or ionic formulae, and structural diagrams for each ingredient.)... 

Elements are named in the same order as they appear in the formula (see above). Although there is no implication that the compound is ionic, the names ending in -ide are the same as those used for anions (e.g. fluoride, F ). For the elements listed in Table 1. anion names are derived not from English but from the Latin name which gives the chemical symbol. For example, CsAu is cesium auride. 

Each manganese cation must therefore be +2 to balance the -2 of the oxide to yield an uncharged ionic formula. The systematic name for Mn + is manganese(II). Monatomic anions are named with the root of the nonmetal followed by -ide, so is oxide. MnO is named manganese(II) oxide. Example 3.8 provides other examples. 

Predict the ionic formulas for the two binary products formed, and write their names. 

Deciphering the formulas of ionic compounds Naming ionic compounds... 

Formulas, Names, and Masses of Compounds Binary Ionic Compounds... 

For all ionic compounds, names and formulas give the positive ion (cation) first and the negative ion (anion) second. 

Ionic compounds contain positive ions (usually a metal) and negative ions (nonmetals or polyatomic ions). The positive ion is named first and is the element name presented unchanged. The negative ion is named second. If it is a monatomic element, the element name ending is changed to —ide. Sodium chloride is a good example. The numbers of ions in the formula are not stated in the formula name. 

Ionic compound Name of cation followed by name of anion Formula of cation followed by formula of anion, each taken as many times as necessary to yield a net charge of zero (polyatomic ion formulas enclosed in parentheses if taken more than once)... 

In each of the following cases predict if a precipitate would form and justify your answer. In the case of precipitation, write the molecular, complete ionic, and net ionic equations. Only the names of the compounds will be given. Make sure the ionic formula is correct before you start balancing the molecular equation. 

A compound can be identified either by its formula (e.g., NaCl) or by its name (sodium chloride). In this section, you will learn the rules used to name ionic and simple molecular compounds. To start with, it will be helpful to show how individual ions within ionic compounds are named. 

The name of an ionic compound consists of two words. The first word names the cation and the second names the anion. This is, of course, the same order in which the ions appear in the formula. 

When two nonmetals combine with each other, the product is most often a binary molecular compound. There is no simple way to deduce the formulas of such compounds. There is, however, a systematic way of naming molecular compounds that differs considerably from that used with ionic compounds. 

Ionic compounds often separate from water solution with molecules of water incorporated into the solid. Such compounds are referred to as hydrates. An example is hydrated copper sulfate, which contains five moles of H20 for every mole of CuS04. Its formula is CuS04- 5H20 a dot is used to separate the formulas of the two compounds CuS04 and H20. A Greek prefix is used to show the number of moles of water the systematic name of CuS04- 5H20 is copper(ll) sulfate pentahydrate. 

Ionic compounds are named by starting with the name of the cation (with its oxidation number if more than one charge is possible), followed by the name of the anion hydrates are named by adding the word hydrate, preceded by a Greek prefix indicating the number of water molecules in the formula unit. 

First check to see whether the compounds are ionic or molecular. Many compounds that contain a metal are ionic. Write the symbol of the metal first, followed by the symbol of the nonmetal. The charges on the ions are determined as shown in Examples C.l and C.2. Subscripts are chosen to balance charges. Compounds of two nonmetals are normally molecular. Write their formulas by listing the symbols of the elements in the same order as in the name, with subscripts corresponding to the Greek prefixes used. 

The student conceptions that were displayed could be categorised into three main types, namely (1) confusion between macroscopic and submicroscopic representations, (2) extrapolation of bulk macroscopic properties of matter to the submicroscopic level and (3) corrfusion over the multi-faceted significance of chemical symbols, chemical formulas as well as chemical and ionic equations. Student conceptions held by at least 10% of the students who were involved in the alternative instractional programme were identified. Several examples of student conceptions involving the use of the triplet relationship are discussed in the next section. 

Ionic compounds are named using the same guidelines used for naming binary molecules, except that the cation name aiways precedes the anion name. Thus, NH4 NO3 is ammonium nitrate, Na2 CO3 is sodium carbonate, and Ca3 (P04)2 is caicium phosphate. The subscripts are not specified in these names because the fixed ionic charges determine the cation-anion ratios unambiguously. Example 3-6 reinforces these guidelines by showing how to construct chemicai formulas from chemical names. 

Now that we know how to name the cations and anions, we merely have to put the two names together to get the names of ionic compounds. The cation is named first and the anion is named next. The number of cations and anions per formula unit need not be included in the name of the compound because anions have characteristic charges, and the charge on the cation has already been established by its name. There are as many cations and anions as needed to get a neutral compound with the lowest possible subscripts. 

B We begin by translating names into formulas. Mn02 (s) + HCl(aq) -> Mn2+ (aq) + Cl2 (aq) Then we produce a balanced net ionic equation with the ion-electron method. 

The structural and formulaic questions concerning compounds such as (4.66a)-(4.66c) were largely resolved by Alfred Werner,31 the first inorganic chemist to receive a Nobel Prize (1913). Werner carefully studied the total number of free ions contributing to ionic conductivity, as well as the number of free chloride ions that could be precipitated (exchanged with a more soluble ion) under conditions of excess Ag+, namely... 

What are the formulas and names of the products that are formed Do the properties of these compounds classify them as having ionic bonds ... 

Crafting names and formulas for ionic and molecular compounds Handling polyatomic ions Talking about acids... 

Cations and anions combine in very predictable ways within ionic compounds, always acting to neutralize overall charge. Therefore, the name of an ionic compound implies more than just the identity of the atoms that make it up. It also helps you determine the correct chemical formula, which tells you the ratio in which the elements combine. Consider these two examples, both of which involve lithium ... 

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