Concept explainers
Interpretation: The correct formula of the given ionic compound to be predicted.
Concept Introduction:
Polyatomic Ions: An ion that is composed of more than one atom.
Ionic compound: A compound that contains ionic bonds.
Naming Ionic compounds:
Once the number and kinds of ions in a compound are known, the formula is written using the following rules;
- List the cation first then the anion.
- Do write the charge of the
transition metal cation in Roman numeral.
Naming polyatomic Ions:
When anions contain the same two types of atoms and one of them is oxygen, the one with the fewer oxygen atoms is named with an ‘-ite’ ending and the one with the greater number of oxygen atoms is named with an ‘-ate’ ending.
The prefix ‘per-’ is used for the ion with the most oxygen atoms. ‘Hypo-’ is used for the ion with the least oxygen atoms.
Naming Anions: Anions are named by replacing the end of the element name with ‘-ide’, followed by the word ‘ion’.
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Fundamentals of General, Organic, and Biological Chemistry (8th Edition)
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