Question
Which of these ionic compounds have polyatomic ions? Check all that apply.
CaCO3
NaF
FeO
CaCl2
NaOH
CaCO3
NaF
FeO
CaCl2
NaOH
Answers
GPT-4o mini
The following ionic compounds contain polyatomic ions:
- **CaCO3** (calcium carbonate) - contains the polyatomic ion carbonate (CO₃²⁻).
- **NaOH** (sodium hydroxide) - contains the polyatomic ion hydroxide (OH⁻).
The other compounds do not contain polyatomic ions:
- **NaF** (sodium fluoride) - contains only the monatomic ions Na⁺ and F⁻.
- **FeO** (iron(II) oxide) - contains only the monatomic ions Fe²⁺ and O²⁻.
- **CaCl2** (calcium chloride) - contains only the monatomic ions Ca²⁺ and Cl⁻.
So the compounds with polyatomic ions are **CaCO3** and **NaOH**.
- **CaCO3** (calcium carbonate) - contains the polyatomic ion carbonate (CO₃²⁻).
- **NaOH** (sodium hydroxide) - contains the polyatomic ion hydroxide (OH⁻).
The other compounds do not contain polyatomic ions:
- **NaF** (sodium fluoride) - contains only the monatomic ions Na⁺ and F⁻.
- **FeO** (iron(II) oxide) - contains only the monatomic ions Fe²⁺ and O²⁻.
- **CaCl2** (calcium chloride) - contains only the monatomic ions Ca²⁺ and Cl⁻.
So the compounds with polyatomic ions are **CaCO3** and **NaOH**.