Naming Ionic Compounds

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Presentation transcript:

Naming Ionic Compounds

Ionic Compounds An ionic compound is a bond between a metal and a non-metal. Electrons are stolen and given.

Name to Formula Step 1: Identify the charge of each element. ex: Sodium Chloride Na1+ Cl1- Step 2: Switch the exponent values (drop the charge) to subsets of the other element. ex: Na1 Cl1 Step 3: Simplify and combine abbreviations. ex: NaCl

Formula Rules Simplify the number of elements: If the numbers are the same they disappear. If the numbers can be factored, reduced.

Rules in Naming Cations then Anions Cations: [Element Name] “Ion” Anions: [Stem of element name]+”ide When combining the two the word “Ion” is dropped.

Formula to Name Step 1: Switch the subsets to exponents of the other element. ex: Li2O -> Li1 O2 Step 2: Label the first element as a cation (+) and the second as a anion (-). ex: Li1+ O2- Step 3: Make sure the charge of each is correct by looking at oxidation values. Step 4: Identify ions following rules for anions and cations. ex: Lithium Oxide

Identifying Names If charges do not match the oxidation value of the element: Determine the needed value Multiply both charges by that value If the cation is a transition metal with multiple possible charges, put the charge as roman numerals in parenthesis after the name.