Electron configuration
The purpose of the electron configuration is to see how electrons go throughout an atom. In an atom there are different energy levels described as n1, n2, n3, n4, and n5. N5 energy is the farthest away from the nucleus, and n1 energy is the closest,1 being the lowest energy level.
They also have sublevels which tell where an electron can be found in an atom. The sublevels are represented in letters by S, P, D, and F. The S is in a shape of a sphere, P in the shape of a Dumbbell, D in the shape of a clover, and F in a double Clover. In every sublevel there is an Atomic Orbital. An atomic Orbital is the movement of an electron. The S sublevel has 1 AO, P has 3 PO, D has 5 AO, F has 7 AO.
So if we were to write an electron configuration for Lithium (Li) its energy level is 2, it is in sublevel S, and has 1 Electron so it would be written as: 2s^1
Aufbau Principle says "electrons enter the sublevels at the lowest energy first.
Aufbau Principle says "electrons enter the sublevels at the lowest energy first.