53-56
I
What is Iodine?
La
What is Lanthanum?
Pm
What is Promethium?
Dy
What is Dysprosium?
What is Lutetium?
Xe
What is Xenon?
Ce
What is Cerium?
Sm
What is Samarium?
What is Holmium?
Hf
What is Hafnium?
Cs
What is Cesium?
Pr
What is Praseodymium?
Eu
What is Europium?
Er
What is Europium?
Ta
What is Tantalum?
Ba
What is Barium?
Nd
What is Neodymium?
Gd
What is Gadolinium?
What is Thulium?
W
What is Tungsten?
Os
What is Osmium?
Tb
What is Terbium?
Yb
What is Ytterbium?
What is Rhenium?