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我叫稀土,英文名是RareEarth,认识我吗?也许你还记得《元素周期表》下部的那两栏附表,其上栏“镧系”即指我,共计15个元素,依次为镧(Lu)、铈(Ce)、镨(Pr)、钕(Nd)、钷(Pm)、钐(Sm)、铕(Eu)、钆(Gd)、铽(Tb)、镝(Dy)、钬(Ho)、饵(Er)、铥(Tm)、镱(Yb)、镥(Lu)。此外副族元素钪(Sc)、钇(Y)因和镧系元素颇为亲近,也一起归到了我“稀土”家族中。由于本家族成员的物理、化学性质相似,并且总是共生、伴生在一起,所以人们也称我们为“稀土17姐妹”。
My name is RareEarth, English name is RareEarth, do you know me? Perhaps you still remember the two columns at the bottom of the “Periodic Table”, the upper column “lanthanum” refers to me, a total of 15 elements, followed by lanthanum Lu, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu. In addition, the sub-elements of scandium (Sc), yttrium (Y) due to the lanthanides and quite close, but also belong to my “rare earth” family. As members of this family have similar physical and chemical properties and are always symbiotic, they are also called “rare earth 17 sisters.”