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.
The exam is also referred to as the 473 Battery Exam. This new exam replaced the 470 Battery Exam and covers: Comprehensive practice post office exams are available in the new 6th edition of Post Office Jobs to prepare for the forms checking, address checking, memory and coding Parts A through C of the new exam.