Determining Ground State of an Atom: Pauli, Hunds, Coloumb's Rules

[ghostbuster25]

im looking for the 3 principals i need to be employ in determining the electronic structure of the ground state of an atom

Ive got Paulis exclusion principle where no 2 electrons in an atom can occupy the same quantum state and hunds rule of the total spin of the electrons always has it maximum possible value...butam a bit stuck on the third.

i guess I am leaning towards the electrostatic potential energy of the electron and the proton...would this be right? I am thinking coloumbs rule would be the one but just want to double check

many thanks

 

[nickjer]

Do you mean Hund's three rules? All three of them can be found here: http://en.wikipedia.org/wiki/List_of_Hund's_rules

 

[ghostbuster25]

i don't think so because I've been already told its Pauli's principle and Hund's rule. In the text I am giving it doesn't mention the 3 Hunds rules just the one i stated above. Hmmm i thought i had it solved with the columbs law but am not too sure now ha ha

 

[tomwilliam]

Could it be the principle that states of lowest energy fill first?

 

[ghostbuster25]

yer that's what i have been leaning towards after reading a bit more