1 2 3 4 5 6 7 3 4 5 6 4 5 n d (l=2) p (l=1) s (l=0) f (l=3) Saunders 7.13 f (l=3)
1s n=1, l=0, ml = 0 (ms = ±(1/2) ) 2py n=2, l=1, ml =-1 (ms= ±(1/2) ) n=2, l=1, ml =1 (ms= ±(1/2) ) 2px 2pz n=2, l=1, ml =0 (ms= ±(1/2) )
Electron Configuration Oxygen Orbital Notation Simplified Notation 1s 2s 2p O 1s22s22p4 [He]2s22p4 Unpaired Ground State Spin Paired Excited State [He]2s22p33s1 Anion - O2- [Ne] Aufbau Principle-add electrons to give the lowest energy Hund’s Rule - electrons fill all orbitals of a subshell before pairing and they will have parallel spin Pauli Exclusion Principle - no two electrons can have the same four quantum numbers pg. 216
paramagnetic-weakly attracted into a magnetic field due to unpaired 4s saunders 8.3sb for magnetism Mn [Ar] 3d54s2 K [Ar] 4s1 K+ [Ar] paramagnetic-weakly attracted into a magnetic field due to unpaired electrons 3d 4s Zn [Ar] 3d104s2 diamagnetic-very weakly repelled by a magnetic field due to all electrons being spin coupled Exceptions Cr [Ar] 3d54s1 Cu [Ar] 3d104s1 pg. 224