Samarium, atomic no. 62, symbol Sm, weight at 150.36, is primarily utilized in the production of Sam...

Neodymium, atomic no. 60, symbol Nd, weight at 144.24, is the most abundant of the rare earths after...

Praseodymium, atomic no. 59, symbol Pr, weight at 140.91, resembles the typical trivalent rare earth...

Cerium, atomic no. 57, symbol Ce, weight at 140.12, is the most abundant of the rare earths. It is s...

Lanthanum, atomic no. 57, symbol La, weight at 138.91, is the first element in the rare earth or lan...