1. What is the correct name for S⁻² ion? * 
 Sulfite ion 
 Sulfide ion 
 Sulfate ion 
 2. Sulfur ionGallium is a Group 3A metal. Which ion does Ga typically form? * 
 Ga⁻³ 
 Ga⁺³ 
 Ga⁻⁵ 
 Ga⁺⁵ 
 3. In which of the following are the symbol and name of the ion given correctly?(There is NO typographical error) * 
 NH₄⁺: ammonia; H⁺:hydride 
 OH⁻ : hydroxide ; O⁻² :oxide 
 PO₃⁻³ : phosphate ; PO₄⁻³ : phosphate 
 NO₃⁻ : nitrite ; N⁻³ :nitride 
 4.Why are systematic names preferred over common names? * 
 Common names were assigned by the scientist who discovered the compound 
 Common names are not very descriptive 
 Common names are derived from the method used to obtain the compound 
 Common names do not provide information about the chemical composition of the compound 
 5. Which element, when combined with fluorine, will form an ionic compound? * 
 oxygen 
 bromine 
 potassium 
 nitrogen