Question

The order in which atomic orbitals are filled is based on what factor?

Answer 1

energy :)

Answer 2

low energy will be filled first and later on high energy orbitals are filled :)the trend goes like this :)

Answer 3

S-orbitals Magnetic quantum number=0
0=1 orbital therefore 2 electrons can fit in
P-0rbitals MQ#= -1,0,+1 which means 3 orbitals and 6 electrons.
Electrons fill each orbital single before pairing. Hope this helps

Answer 4

Hunds Rule.
I think you should look this up online for a detailed scope of this.