Write a structural formula for each compound

The subscript is written only if the number of atoms is greater than 1.

chemical formula

As noted earlier, many kinds of model kits are available to students and professional chemists, and the beginning student is encouraged to obtain one. C We obtain the same formula for Freon using the convention for organic compounds. Solution: a.

Write a structural formula for each compound

List elements in the same group starting with the lower element and working up. The lowest possible numbers were not used; 2,2,3-trimethylbutane. In inorganic compounds, the component elements are listed beginning with the one farthest to the left in the periodic table, as in CO2 or SF6. Draw each structure. Name the compound and write its condensed structural formula. The phosphorus-sulfur compound that is responsible for the ignition of so-called strike anywhere matches has 4 phosphorus atoms and 3 sulfur atoms per molecule. Exercise 3.

Write equations for the complete combustion of each compound. Chemical bonds are generally divided into two fundamentally different types: ionic and covalent. This discussion of structures and formulas begins by describing covalent compounds. If it is an inorganic compound, list the elements beginning with the one farthest left in the periodic table.

Example 3. Condensed structural formulas are also helpful when showing that a group of atoms is connected to a single atom in a compound. Selenium is not shown due to the complexity of its structure.

How to write a chemical formula

Write equations for the complete combustion of each compound. Example 3. Chemical bonds are generally divided into two fundamentally different types: ionic and covalent. Consider the line-angle formulas shown here and answer the questions. The convention for representing the formulas of organic compounds is to write carbon first, followed by hydrogen and then any other elements in alphabetical order e. Structural formulas are helpful because they explain the properties and structure of the compound which empirical and molecular formulas cannot always represent. B If the substance is an organic compound, arrange the elements in order beginning with carbon and hydrogen and then list the other elements alphabetically. Covalent compounds that predominantly contain carbon and hydrogen are called organic compounds. Compounds that consist primarily of elements other than carbon and hydrogen are called inorganic compounds; they include both covalent and ionic compounds.

List elements in the same group starting with the lower element and working up. When the group of atoms that make up the molecules of different isomers are bonded together in fundamentally different ways, we refer to such compounds as constitutional isomers.

Compounds such as water, whose compositions were established long before this convention was adopted, are always written with hydrogen first: Water is always written as H2O, not OH2. Fluorine and chlorine are in the same group, so they are listed beginning with the lower element and working up: CClF.

chemical formula of a compound
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Types of Chemical Compounds and their Formulas