unit 1 chem 2 magnetism

paramagnetism

a material being weakly attracted to an external magnetic field due to unpaired electrons (looking for pairs)

ferromagnetism

when all the electron spins point the same way a material becomes strongly magnetic and a permanent magnet

diamagnetism

all electrons are paired so a material is weakly repelled

domain

a region in a ferromagnetic material where all spins point the same direction

pauli exclusion principle

no 2 electrons in the same orbital will have the same spin

“building up” principle (n + l)

determines the energy arrangement for electrons, especially lowest arrangement

hund’s rule

each orbital must have parallel spins before pairing

aufbau principle

any sublevel of orbitals must be filled before the next