Naming Ionic Compounds

Key Questions

  • How can I name ionic compounds with three elements?

    Here is a video which summarizes how to name ternary (3+ elements) ionic compounds.

    Video from: Noel Pauller

    Noel P.

    mrpauller.weebly.com · 2 · Jul 15 2014
  • How can I name polyatomic ionic compounds?

    Polyatomic Ions- are molecules made up of 2 or more atoms that are considered an ionic group, that is, a molecule with a charge.

    Rule 1. The cation is written first in the name; the anion is written second in the name.

    Rule 2. When the formula unit contains two or more of the same polyatomic ion, that ion is written in parentheses with the subscript written outside the parentheses.

    Rule 3. If the cation is a metal ion with a fixed charge, the name of the cation is the same as the (neutral) element from which it is derived (e.g., Na+ = "sodium"). If the cation is a metal ion with a variable charge, the charge on the cation is indicated using a Roman numeral, in parentheses, immediately following the name of the cation (e.g., Fe3+ = "iron(III)").

    Rule 4. If the anion is a monatomic ion, the anion is named by adding the suffix -ide to the root of the element name (e.g., I- = "iodide").

    Here is a video link which explains this more.

    A. M. · · Jun 29 2014

Questions

Ionic Bonds