Question

What is electronic configuration of mg in k,l,m,n shells?

Answer 1

Answer:

electronic configuration will be k=2 l=8 m=2 n=0

Explanation:

the first k shell can accommodate only 2 electrons as by the duplet rule;

the l shell can fill upto 8 electrons by the 2n^2 rule of filling the electrons;

the rest of the 2 electrons have  occupied its position on the m shell

the complex configuration would be;-

s^2,2s^2,2p^6,3p^2