Formula for Inorganic Compounds

Diammonium hydrogen phosphate Dicalcium phosphate dihydrate Fluorapatite Hydrogen peroxide Hydroxylapatite 

---

In 1893 Werner founded his new constitutional formula for inorganic compounds, applied the theory to the systematic classification of the chromi-ammines, and found that all the chromi-ammines which had been investigated could be fitted in to his system of classification. Since then the chemistry of the chromi-ammines has been further developed hv Werner, Pfeiffer, and many others relationships have been traced between chromi-ammines, complex salts, and chromic salt hydrates, and numerous cases of isomerism have been discovered in this series of ammines. 

Name inorganic compounds, given their chemical formulas, and write chemical formulas for inorganic compounds (Section 3.11, Problems 73-84). 

Substances are listed alphabetically by systematic name. The Notes column gives further information on the form of the substance and the basis to which the TLV is referred. This column also includes common synonyms and acronyms in brackets (e.g., [MTBE]). The Eormula column gives the molecular formula in the Hill convention for organic compounds and the customary line formula for inorganic compounds. The TWA and STEL limits appear in the last two columns. 

Although these molecules, as a whole, are not symmetric, some of their component parts may be symmetrical. They possess what is called local symmetry. Similar atomic groups in different molecules often have similar geometries, and thus similar local symmetries. The structural formulae reveal considerable information about these local symmetries, or at least their similarities and differences in various molecules. The above simplified structural formulae are especially useful in this respect. This approach is widely applicable in organic chemistry, where relatively few kinds of atoms build an enormous number of different molecules. A far greater diversity of structural peculiarities is characteristic for inorganic compounds. 

Components. Each component is listed according to lUPAC name, formula, and Chemical Abstracts (CA) Registry Number. The formula is given either in terms of the lUPAC or Hill (25) system and the choice of formula is governed by what is usual for most current users i.e., lUPAC for inorganic compounds, and Hill system for organic compounds. Components are ordered according to ... 

SOLUTION a. This molecular model is of a molecule that is composed of two O and two H atoms. For inorganic compounds, the elements in a chemical formula are written in order such that the most metalUc element is Usted first. (Even though H is not metallic, it is positioned in the periodic table in such a way that it is considered to be a metal when writing formulas.) Hence, the chemical formula is H2O2. Using the same approach as Example 3.1, calculating the formula weight yields 34.02 amu. 

Chapter 6, Ionic and Molecular Compounds, describes how atoms form ionic and covalent bonds. Chemical formulas are written, and ionic compounds— including those with polyatomic ions—and molecular compounds are named. An introduction to the three-dimensional shape of carbon molecules provides a basis for the shape of organic and biochemical compounds. Organic chemistry is introduced with the properties of inorganic and organic compounds and condensed structural formulas of alkanes. Section 6.1 is now tilled Ions Transfer of Electrons, 6.2 is titled Writing Formulas for Ionic Compounds, 6.3 is... 

MF Is the molecular formula of the compound expressed In the Hill convention. This means that, for organic compounds, the number of carbon atoms is cited first this is followed by the number of hydrogen atoms and then all other elements are cited in alphabetical order. For inorganic compounds, all elements occur in alphabetical order. 

Descriptive properties for a basic group of approximately 1400 inorganic compounds are compiled in Section 3. These follow a concise, revised introduction to inorganic nomenclature that follows the recommendations of the lUPAC published in 1990. In this section are given the exact atomic (or formula) weight of the elements accompanied, when available, by the uncertainty in the final figure given in parentheses. 

---