1. Ionic compounds are formed when electrons are transferred from one atom to another, creating oppositely charged ions that attract each other.
2. Covalent compounds are formed when atoms share electrons to achieve a stable electron configuration.
3. In ionic compounds, the total positive charge must equal the total negative charge to form a neutral compound.
4. The name of an ionic compound is written by stating the cation first, followed by the anion. For transition metals with variable charges, the charge is indicated using Roman numerals in parentheses.
5. The formula of an ionic compound is determined by balancing the charges of the ions so that the overall charge is zero.
6. sodium chloride: NaCl
7. calcium oxide: CaO
8. magnesium nitride: Mg₃N₂
9. aluminum sulfide: Al₂S₃
10. potassium phosphide: K₃P
11. FeCl₂: iron(II) chloride
12. CuO: copper(II) oxide
13. SnF₄: tin(IV) fluoride
14. PbI₂: lead(II) iodide
15. Cr₂O₃: chromium(III) oxide
Parent Tip: Review the logic above to help your child master the concept of writing formulas and naming compounds worksheet.
