Why is the periodic table called the periodic table?

Look at your modern periodic table and notice that these groups of elements all happen to share the same column. read more

The periodic table's name comes from the fact that it arranges the elements into repeating sets, otherwise known as"periods." These periods are defined by the covalence of an element, the number of electrons it has in its outermost shell and by other elemental attributes. read more

In the modern periodic table the elements are arranged in the increasing order of their atomic number.There are seven periods .The number of elements in each period is equal to the maximum number of electrons in the corresponding shell.After 2,8,18,32 elements the physical chemical properties are repeated.This trend is called periodic property which is repeated after certain regular intervals of atomic number. read more