Overview of the periodic table

Periodic law periodic table is the concrete form of expression with the form, it reflects the internal structure of atoms and their mutual links between the law, referred to as the periodic table. There are many expressions of the periodic table, the most commonly used is the long-form periodic table Werner. The periodic table has 7 cycles, 16 families and 4 areas.
Elements in the periodic table reflects the position of the atomic structure of the element. Elements in the periodic table in the same row form a cycle. Atoms with periodic layers is equal to the electronic serial number of the cycle.