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.
473 / 473 E Postal Exam | Post Office Exam | USPS Exam. The Postal Service recruits through their eCareer online recruiting service. All Post Office job vacancies are listed on their service. Entrance tests including the 473 / 473E Postal Exam are still required for most jobs; however, you now apply online for post office job vacancies and complete an initial assessment when you apply.