Formula writing and nomenclature

Write the formula for carbon IV chloride. The charge on chlorine is When the acid has an -ite polyatomic ion after the H, that makes it an -ous acid. Therefore, we need 2 N atoms and 5 O atoms to balance the charges. Include a Roman numeral to indicate the oxidation number charge on the metal cation.

HCO3-is called either the bicarbonate ion or the hydrogen carbonate ion. For instance, if you know nitrate is NO3-,then nitrite is NO The following periodic table will also come in handy.

Even though it is a group of atoms it acts like it were a single atom. Thus, there are 5 O atoms in the chemical formula. The names of nearly all polyatomic ions end with the letters —ate or —ite. Since there is only one nitrogen atom AND it is the first element the prefix mono is not used.

That means you need to see the naming acids rules. Name the compound NO2. The Roman numeral is I. Write the formula for nitrogen V oxide.

H2SO4 is sulfuric acid. Name the compound N2O.

There is no prefix before carbon in the chemical name, therefore, there is only 1 C atom in the chemical formula. You can also substitute the other halogens for Cl and make additional sets of the series. Phosphate ion PO Pattern 1: A simple cation obtained from a single atom takes its name from the name of the element.

When you see an acid name beginning with hydro- think: Compounds that contain polyatomic ions An ion is an atom with an electric charge positive or negative.Nomenclature and Formula Writing Ionic Compounds (metal + nonmetal) Binary Compounds (two elements only) - write the name of the metal (positively charged) - then write the name of the nonmetal using the ide ending.

Formulas and Nomenclature of Ionic and Covalent Compounds. Adapted from McMurry/Fay, sectionp. Writing Formulas of Ionic Compounds.

For ionic compounds, the term formula mass or formula weight is used instead. Start studying Chemistry - Practice Naming/Writing Formulas of Compounds.

Learn vocabulary, terms, and more with flashcards, games, and other study tools. © Mr. D. Scott; CHS Chemical Formula Writing & Nomenclature Binary Acids Ternary Acids Basic Rules for acids All formulas begin with hydrogen, H. Chemical Nomenclature and Formula Writing Chemical nomenclature is the system that chemists use to identify and name compounds.

Compounds can have two types of names: systematic names (names that identify the chemical composition of a chemical compound). While there are many thousands of different chemical compounds there is a very definite system of nomenclature whereby we can name or write chemical formulas for most compounds.

We divide the compounds into two main types – binary compounds and ternary compounds. Write the formula for potassium sulfide.

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Formula writing and nomenclature
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