A NOTE ON RARE EARTH ELEMENTS INTRODUCTION Rare earth elements or rare earth metals are a group of seventeen elements in the Periodic Table including Scandium, Yttrium and 15 Lanthanoids with Z ranging continuously from 57 to 71 ( La – Lanthanum, Ce-Cerium, Pr- Praseodymium, Nd-Neodymium, Pm- Prometheum, Sm-Samarium, Eu – Europium, Gd – Gadolinium, […]