Periodic Table PRO – is a mobile chemistry assistant on your phone. It is an organizational chart representing all chemical elements in an ordered form by atomic number, electron configuration, and chemical properties.The main components of the table include horizontal rows (periods) and vertical columns (groups or families). Each element is represented by a symbol and an atomic number. As you move from left to right and from top to bottom, the atomic numbers and electron configuration of the elements change, reflecting patterns in their chemical behavior.