. . "lanthanide series"@en-us . "114625297"^^ . . "113788177"@en-us . . "14625297-n"^^ . . "0"^^ . . "the rare-earth elements with atomic numbers 57 through 71; having properties similar to lanthanum"@en-us . . "0"^^ . "lanthanide series"^^ . . . .