chem 4

Pauli exclusion principle

The restriction on the Placement of electrons into the same orbital, If 2 electrons are in the same orbital they have to have opposite spins.

Aufbau principle

electrons must occupy the lowest sub level before advancing into a higher sub level

Hunds rule

Once all of the orbitals in a sub level are occupied with electrons that all have the same spin, only then can the electrons begin to pair up.

Excited state

An atom that contains the original amount of electrons but has a higher amount of electron potential energy than the ground state configuration

Quest

Tmr