Terbium, atomic no. 65, symbol Tb, weight at 158.93, is primarily used in phosphors, particularly in...

Dysprosium, atomic no. 66, symbol Dy, weight at 162.50, is most commonly used as in neodymium-iron-b...

Holmium, atomic no. 67, symbol Ho, weight at 164.93, has the highest magnetic moment (10.6µB) of any...

Erbium, atomic no. 68, symbol Er, weight at 167.26, has application in glass coloring, as an amplifi...

Thulium, atomic no. 69, symbol Tm, weight at 168.94, products are mainly used in making crystal and ...