Compounds Made from Two Nonmetals

2 Given the name or formula of a binary molecular compound, write the other. 

The stair-step line in the periodic table that begins between atomic numbers 4 and 5 and ends between 84 and 85 separates elements on the left that are metals, such as iron, copper, and lead, from elements on the right that are nonmetals, such as hydro- 

The name of a molecular compound formed by two nonmetals or a metalloid and a nonmetal has two words  

The differences between elements that are metals and those that are nonmetals can be traced to the arrangement of electrons in the atoms. This subject is considered in more detail in Section 11.6. 

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Introduction to Nomenclature Formulas of Elements Compounds Made from Two Nonmetals Names and Formulas of Ions Formed by One Element... 

Names of Compounds Made from Two Nonmetals (or a Metalloid and a Nonmetal)... 

Anhydride (i)an- hl- drld (1863) n. (1) A compound from which water has been extracted. (2) An oxide of a metal (basic anhydride) or of a nonmetal (acidic anhydride) that forms a base or an acid, respectively, when united with water. (3) An organic compound made (conceptually) by the union of two acid molecules with the elimination of a molecule of water. In practice, organic anhydrides are usually produced by other reactions. 

In the name of an ionic compound made up of two elements, the name of the metal ion, which is written first, is the same as its element name. The name of the nonmetal ion is obtained by using the first syllable of its element name followed by ide. In the name of any ionic compound, a space separates the name of the cation from the name of the anion. Subscripts are not nsed they are understood becanse of the charge balance of the ions in the compound (see Table 6.4). 

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