What is a chemical name for the compound PdO?
- Jul 1
- 1 min read
What is a chemical name for the compound PdO?
(1) palladium (II) oxide
(2) palladium (IV) oxide
(3) palladium peroxide
(4) palladium hydroxide
Solution:
PdO is an ionic compound because it is composed of the metal palladium (to the left of the staircase on the Periodic Table) and the nonmetal oxygen (to the right of the staircase on the Periodic Table). To name this compound, we write the name of the metal followed by the name of the nonmetal ending in "-ide." This gives us palladium oxide, eliminating choices (3) and (4).
Because palladium is a transition metal, we must also include a Roman numeral to indicate its oxidation number. According to the Reference Tables, oxygen has an oxidation number of −2. Therefore, palladium must have an oxidation number of +2 to balance the charge in PdO. The compound is named palladium(II) oxide, so choice (1) is the correct answer.
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