Write the name for each of the following ions (include the Roman numeral when necessary): e. Au³⁺

Verified step by step guidance

1. Identify the element symbol 'Au' which stands for gold.
2. Recognize that the ion has a charge of 3+, indicating it is a cation with a positive charge.
3. For transition metals like gold, use Roman numerals to indicate the charge of the ion.
4. The name of the ion is 'Gold(III)' where 'III' represents the 3+ charge.
5. Combine the element name with the Roman numeral to form the full name: 'Gold(III) ion'.

Key Concepts

Ionic Charge

Ionic charge refers to the electrical charge that an ion carries, which is determined by the loss or gain of electrons. In the case of Au³⁺, the '³⁺' indicates that the gold ion has lost three electrons, resulting in a positive charge. Understanding ionic charges is essential for naming ions correctly and predicting their behavior in chemical reactions.

Transition Metals

Transition metals are elements found in the d-block of the periodic table, known for their ability to form various oxidation states. Gold (Au) is a transition metal that can exhibit multiple oxidation states, including +1 and +3. Recognizing the properties of transition metals is crucial for accurately naming their ions, especially when Roman numerals are involved to indicate their charge.

Nomenclature of Ions

Nomenclature of ions involves the systematic naming of ions based on their charge and the elements they derive from. For transition metals like gold, the name of the ion includes the element name followed by the oxidation state in Roman numerals. For Au³⁺, the correct name is 'gold(III)' to reflect its +3 charge, which is important for clear communication in chemistry.