Answer: 1. Calcium Phosphate - Chemical Formula: Ca₃(PO₄)₂- Oxidation Numbers:- Calcium (Ca): +2- Phosphorus (P): +5- Oxygen (O): -2 2. Sodium Hydroxide - Chemical Formula: NaOH- Oxidation Numbers:- Sodium (Na): +1- Oxygen (O): -2- Hydrogen (H): +1 3. Ammonium Sulfate - Chemical Formula: (NH₄)₂SO₄- Oxidation Numbers:- Nitrogen (N): -3- Hydrogen (H): +1- Sulfur (S): +6- Oxygen (O): -2