Non lanthanides (scandium, yttrium) are listed separately also. Rare earths include yttrium, scandium and the lanthanides (atomic numbers 57 to 71): lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium