if both K and l shells were filled .what is the total number of electron in an atom

K SHELL IS inner shell and has 2electron 
l shell is middel shell and has 8 electron 
  total no of electron in atom is 10 
formula to find out how many electron fill in k , l, m , n shell = 2n^{2  
for k shell (n=1) so 2*1}2=2 and soo on