Question

1. drag and drop the formulas with the chemical names. feo hg₂o hgo fe₂o₃

Explanation:

To solve this, we analyze the oxidation states and chemical formulas:

• For \( \text{FeO} \): Iron (Fe) has a +2 oxidation state (since \( \text{O} \) is -2, \( \text{Fe}^{2+} + \text{O}^{2-} \)), so it’s iron (II) oxide.
• For \( \text{Hg}_2\text{O} \): Mercury (Hg) has a +1 oxidation state (two \( \text{Hg}^+ \) and one \( \text{O}^{2-} \)), so it’s mercury (I) oxide.
• For \( \text{HgO} \): Mercury (Hg) has a +2 oxidation state (\( \text{Hg}^{2+} + \text{O}^{2-} \)), so it’s mercury (II) oxide.
• For \( \text{Fe}_2\text{O}_3 \): Iron (Fe) has a +3 oxidation state (two \( \text{Fe}^{3+} \) and three \( \text{O}^{2-} \)), so it’s iron (III) oxide.

Answer:

• \( \text{FeO} \): iron (II) oxide
• \( \text{Hg}_2\text{O} \): mercury (I) oxide
• \( \text{HgO} \): mercury (II) oxide
• \( \text{Fe}_2\text{O}_3 \): iron (III) oxide