Question

How do we prove that modern periodic table’s basic structure is based on electronic configuration.

Answer 1

As we know that the modern periodic periodic table is made up of seven periods and eighteen groups. The elements of the modern periodic table are divided into four blocks , they are $s,p,d,f$ blocks.

Complete step by step answer:
We know that there are presently $118$elements in the modern periodic table. There are seven periods in total and eighteen groups in total. The vertical column is called the group and the horizontal column is called the period. The group is based upon the organization of the outer shell electrons .The group actually represents the number of valence electrons of that particular element. The period represents the number of shells or orbit of the particular element .The term block was first used by Charles Janet. The block represents the orbital in which the valence electrons or vacancies lie in. The number of electrons of an atom is given by the atomic number . In other words we can say that the electronic configuration of the atoms play a major role in explaining the properties and position of the element in the periodic table. So from the above explanation it is clear to us that the basic structure of the modern periodic table is based on electronic configuration.

Additional information:
There is an interesting fact , that the elements found in earth and mars are same .The determination of the position of the hydrogen element in the periodic table was very controversial because the hydrogen element has characteristics of both the first group and the seventeenth group , that is the alkali metal group and the halogen group. But finally it was decided that it will be kept in the first group for convenience.

Note:
It is important to note and remember that the period represents the number of orbits or shells an element has. The group represents the number of valence electrons of the element. The total number of electrons is given by the atomic number. So as a whole we can say that the basic structure of the modern periodic table is the electronic configuration of the elements.