Question

state the rules of electronic configuration

Answer 1

There are many quantum shells and the first thing u should write is the number the quantum shell u are mentioning. Then comes the orbital which is among - S,P,D,F. Then as a power to the orbital letter write the number of electrons the orbital currently consists of. Remember that s has a max capacity of 2 electrons, p has 6, d has 10, f has 14.