Scandium, atomic no. 21, symbol Sc, weight at 44.96, products are mainly used in ceramics, lasers, p...

Lutetium, atomic no. 71, symbol Lu, weight at 174.97, is the last member of the rare earth series. U...

Ytterbium, atomic no. 70, symbol Yb, weight at 173.04, is being applied to numerous fiber amplifier ...

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

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