Thallium (Tl) belongs to the Group 3 - Boron Family of elements. In the new IUPAC grouping, The Boron family is now Group 13.
Page updated 2/25/2016. Carrier, clerk, mail handlers, and distribution associates are required to take and pass the 473 Postal Exam. Other applicants including motor vehicle operators, mechanic, clerical, electronic technician, machinist, and trades must also pass a written test.
Page updated 5/23/2017. Post Office Job Qualifications | Age Limit, Citizenship, Exams, Physicals, and Driver's license. Various Post Office job qualification standards from age restrictions to physical requirements must be met before you can take one of the Postal Service exams. Applicants must be a certain age and they have to pass a written exam for most occupations, meet physical requirements, have a driver's license, and all applicants must pass a drug test.