Question

How does Element "k"(atomic number 19) has an electronic configuration as 2,8,8,1 as the rule for the electronic configuration says that "The electrons will fill the inner shells before the outer shells. First electrons will fill the K-shell and then L shell and so on. Thus, electronic configuration of elements follows an ascending order". The maximum number of electrons in the third shell is 32. How does it then start filling the 4th shell. Please explain

Answer 1

listen boy
it is also based on ENERGY, Which is fully discussed in AuBau principle ,u can go through that and hope u will understand

Answer 2

This is because it have capacity of 32 but according to a law it cannot took more than 8 applicable to shell l m and n