How does the electronic configuration of an atom related to its position in the modern periodic table ?

How does the electronic configuration of an element relate to its position in the modern periodic table?

How does the electronic configuration of an atom of an element related to its position in the modern periodic table ? Explain with one example.

i) Who proposed Modern - periodic law? ii) How does the electronic configuration of an atom of an element relate to its position in the modern periodic table? Explain with one example.