Chemistry - Ionic Compounds, Naming and Formula Writing

Writing names and formulas for ionic compounds. Provide proper chemical names (spelling counts!). Or provide chemical formulas using proper chemcial symbols, parentheses when needed, and numbers immediately following as subscripts, as in the following format: sodium chloride would be NaCl and aluminum sulfate [Al₂(SO₄)₃] would be expressed as Al2(SO4)3.