Multiple ChoiceWhich of the following element symbols represents the element found in mercury?34views
Multiple ChoiceWhich element is in the same period as ruthenium (Ru) but has a higher atomic number than ruthenium?51views
Multiple ChoiceWhich of the following is a way the periodic table helps you find information about a specific element?35views
Multiple ChoiceOn many periodic tables, which color is commonly used to represent the element symbols of gases at room temperature?56views
Multiple ChoiceWhich one of the following elements was not easily spotted by ancient cultures?34views