An element that is a member of the alkali group of metals. It has the atomic symbol Na, atomic number 11, and atomic weight 23. With a valence of 1, it has a strong affinity for oxygen and other nonmetallic elements. Sodium provides the chief cation of the extracellular body fluids.
The general rule is that an employee who sells or handles alcoholic beverages must be at least 18 years of age. However, off-premises beer licensees may employ a person under 18 as a cashier for beer sales as long as that person is in the presence of and under the direct supervision of a person 18 years of age or over.
Rating Newest Oldest. Best Answer: 18 to serve or bar tend in PA. NIAA's website has an index of alcohol laws by state, and shows you can serve or tend bar in PA at 18... Federal Law ONLY affects the age in the US that you can legally purchase alcohol, all other alcohol-based laws are state based.