ATOMS - copper, helium, silver
MOLECULES - iodine, fluorine, bromine, NO₂, C₃H₈
FORMULA UNITS - KMnO₄, MgCl₂, HgBr₂, Ba(OH)₂
<h3>Further Explanation</h3>
The basic units or representative units of a substance may be atoms, ions, molecules, or formula units.
- If the substance are elements in monatomic form, their representative unit is "atoms". If they are diatomic elements, then their representative unit is "molecule".
- If the substance is a compound, the representative unit depends on the kind of bonding. If the substance is ionic in nature, its representative unit is called a "formula unit". If the substance is covalent or molecular, the representative unit is also called "molecule".
- Recall that ionic compounds are substances that are made up of metallic and nonmetallic elements that are chemically bonded. Covalent or molecular compounds are those that are only composed of chemically bonded nonmetal elements.
- If pertaining to the component ions of an ionic compound, the representative particles are called "ions".
Therefore, the substances in the problem may be grouped to the following representative particles:
ATOMS - copper, helium, silver
MOLECULES - iodine, fluorine, bromine, NO₂, C₃H₈
FORMULA UNITS - KMnO₄, MgCl₂, HgBr₂, Ba(OH)₂
<h3>LEARN MORE</h3>
Keywords: representative units, atoms, molecules, formula units
