Question

how does the electronic configuration of an atom of an element relates its position in Modern Periodic Table explain with an example

Answer 1

lets take an example →

Atomic number of magnesium is 12

its electronic configuration will be 2,8,2

it has three shells it means it will be in third period.

it has 2 valence electrons it means it will be in 2nd group.

thats how electronic configuration of an element describes its position in periodic table.


hope it helps you