Question

given a formula, you have learned to write the name. given a name, you have learned to write the formula. in which situations is it necessary to use charges to determine the correct answer? (choose the best answer) 1) writing formulas for binary ionic compounds 2) writing formulas for binary ionic compounds with transition metals 3) writing names for binary ionic compounds with transition metals 4) writing formulas for binary ionic compounds with polyatomics 5) never for covalent compounds 1) writing formulas for all types of ionic compounds 2) writing formulas for covalent compounds 1) writing formulas and names for all covalent compounds 2) writing names for ionic compounds with transition metals. 1) writing names for binary ionic compounds 2) writing names for ionic compounds with transition metals 3) writing formulas for ionic compounds with polyatomic ions

Explanation:

In ionic compounds, the charges of the ions are crucial for writing the correct formulas. Binary ionic compounds, binary ionic compounds with transition metals, and ionic compounds with polyatomic ions all require knowledge of ion - charges to write their formulas. Covalent compounds are formed by sharing electrons and do not involve charges in the same way for naming or formula - writing. When writing names for ionic compounds (even with transition metals), the focus is more on the oxidation state (related to charge but a different naming aspect) and the naming rules for anions and cations. So, writing formulas for all types of ionic compounds requires using charges.

Answer:

1. Writing FORMULAS for all types of ionic compounds