1 Explain the meaning of various chemical formulas (empirical, molecular, and structural formulas). 2  Calculate weight and mole percentages from a formula.  Derive chemical formulas from a given set of information.
A: Zinc belongs to the family of elements found in Group 12. Some other elements in this family are cadmium and mercury. These three elements are metals, but mercury is a metal that is liquid at room temperature, while zinc and cadmium are solids at room temperature.
The group number is an identifier used to describe the column of the standard periodic table in which the element appears. Groups 1-2 (except hydrogen) and 13-18 are termed main group elements. Groups 3-11 are termed transition elements.