Sinonimi: Tb | atomic number 65
ETYM New Lat., from Ytterby, in Sweden. Related to Erbium.
Soft, silver-gray, metallic element of the lanthanide series, symbol Tb, atomic number 81, atomic weight 158.925. It occurs in gadolinite and other ores, with yttrium and ytterbium, and is used in lasers, semiconductors, and television tubes. It was named in 1843 by Swedish chemist Carl Mosander (1797–1858) for the town of Ytterby, Sweden, where it was first found.
A metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite; SYN. Tb, atomic number 65.
Retki metal, retka zemlja.
Elemenat, jedna od retkih zemlji, atomska težina 159.2, redni broj 65, znak Tb.