First, Before we talk about anything else , we need to clear this one thing up ...What is the Periodic Table? Periodic Table may be defined as the arrangement of all the known elements according to their properties in such a way that the element of similar properties are grouped together in a tabular form. Its a periodic representation of all the elements, in a table ( But, you will be surprised by the amount of information the scientist were able to pack in one chart! ) *The Periodic Table is divided into 1) 18 vertical columns , also called Groups 2) 7 horizontal rows , also called Periods 3) Its divided into 4 blocks (namely s,p,d and f) -- This tells us about the electronic configuration of the element , the subshells or orbitals present in the orbits If you are wondering what "s, p ,d and f" orbital is:- Within the shells, electrons are further grouped into subshells of four different types, identified as s, p, d, and f in order of increasing energy. We ca...