How to Write Chemical Formulas and Names for Various Compounds?

To complete the table with the correct formulas and names for the compounds formed by the given cations and anions, we need to understand the charges of each ion and how they interact to form neutral compounds.

Here’s a breakdown of each combination:

• Na⁺ and CO₃^2-: The formula is Na₂CO₃, and the name is Sodium Carbonate.
• Na⁺ and PO₄^3-: The formula is Na₃PO₄, and the name is Sodium Phosphate.
• Na⁺ and OH^–: The formula is NaOH, and the name is Sodium Hydroxide.
• Na⁺ and C₂O₄^2-: The formula is Na₂C₂O₄, and the name is Sodium Oxalate.
• Mg²⁺ and CO₃^2-: The formula is MgCO₃, and the name is Magnesium Carbonate.
• Mg²⁺ and PO₄^3-: The formula is Mg₃(PO₄)₂, and the name is Magnesium Phosphate.
• Mg²⁺ and OH^–: The formula is Mg(OH)₂, and the name is Magnesium Hydroxide.
• Mg²⁺ and C₂O₄^2-: The formula is MgC₂O₄, and the name is Magnesium Oxalate.
• Al³⁺ and CO₃^2-: The formula is Al₂(CO₃)₃, and the name is Aluminum Carbonate.
• Al³⁺ and PO₄^3-: The formula is AlPO₄, and the name is Aluminum Phosphate.
• Al³⁺ and OH^–: The formula is Al(OH)₃, and the name is Aluminum Hydroxide.
• Al³⁺ and C₂O₄^2-: The formula is Al₂(C₂O₄)₃, and the name is Aluminum Oxalate.
• NH₄⁺ and CO₃^2-: The formula is (NH₄)₂CO₃, and the name is Ammonium Carbonate.
• NH₄⁺ and PO₄^3-: The formula is (NH₄)₃PO₄, and the name is Ammonium Phosphate.
• NH₄⁺ and OH^–: The formula is NH₄OH, and the name is Ammonium Hydroxide.
• NH₄⁺ and C₂O₄^2-: The formula is (NH₄)₂C₂O₄, and the name is Ammonium Oxalate.
• Zn²⁺ and CO₃^2-: The formula is ZnCO₃, and the name is Zinc Carbonate.
• Zn²⁺ and PO₄^3-: The formula is Zn₃(PO₄)₂, and the name is Zinc Phosphate.
• Zn²⁺ and OH^–: The formula is Zn(OH)₂, and the name is Zinc Hydroxide.
• Zn²⁺ and C₂O₄^2-: The formula is ZnC₂O₄, and the name is Zinc Oxalate.
• Cu⁺ and CO₃^2-: The formula is Cu₂CO₃, and the name is Copper(I) Carbonate.
• Cu⁺ and PO₄^3-: The formula is Cu₃PO₄, and the name is Copper(I) Phosphate.
• Cu⁺ and OH^–: The formula is CuOH, and the name is Copper(I) Hydroxide.
• Cu⁺ and C₂O₄^2-: The formula is CuC₂O₄, and the name is Copper(I) Oxalate.

Each compound’s formula is determined by balancing the total positive and negative charges, ensuring they sum to zero. This systematic approach allows us to derive both the chemical formula and its corresponding name accurately.