Final answer:
The question involves identifying and categorizing compounds as either ionic or covalent, with examples such as BaO being ionic and NF3 being covalent.
Step-by-step explanation:
Distinguishing Between Ionic and Covalent Compounds
To determine whether a compound is ionic or covalent, we must look at the elements involved and their bond formation. Ionic compounds consist of metals bonded to nonmetals, where electrons are transferred, forming positive and negative ions held together by ionic bonds. Covalent compounds involve the sharing of electrons between nonmetals.
- NF3 - Covalent compound (nonmetals nitrogen and fluorine sharing electrons)
- BaO - Ionic compound (metal barium and nonmetal oxygen), ions involved: Ba2+ and O2-
- (NH4)2CO3 - Ionic compound (ammonium ions and carbonate ions), ions involved: NH4+ and CO32-
- Sr(H2PO4)2 - Ionic compound (strontium ions and dihydrogen phosphate ions), ions involved: Sr2+ and H2PO4-
- IBr - Covalent compound (nonmetals iodine and bromine sharing electrons)
- Na2O - Ionic compound (metal sodium and nonmetal oxygen), ions involved: Na+ and O2-
Correct Chemical Formulas for Ionic Compounds:
- Sodium phosphide - Na3P
- Iron (II) nitrite - Fe(NO2)2
- Calcium hydrogen phosphate - CaHPO4
- Chromium (III) oxide - Cr2O3
Proper Chemical Names for Ionic Compounds:
- NaBr - Sodium bromide
- CuCl2 - Copper (II) chloride
Salts are substances formed of crystals of equal numbers of cations and anions held together by ionic bonds.