Lanthanoide (Seltenerdmetalle) 
lanthanides (rare earth) 
Erbium 
erbium 
Ytterbium 
ytterbium 
Thulium 
thulium 
Lutetium 
lutetium 
Dysprosium 
dysprosium 
Holmium 
holmium 
Terbium 
terbium 
Samarium 
samarium 
Promethium 
promethium 
Neodym 
neodymium 
Praseodym 
praseodymium 
Cer 
cerium 
Gadolinium 
gadolinium 
Europium 
europium 
Lanthan 
lanthanum 