a radioactive rare earth element also PROMETHEUM
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AnswerCrossword Clue
promethiuma radioactive rare-earth element also PROMETHEUM
promethiumsPROMETHIUM, a radioactive rare-earth element also PROMETHEUM
prometheumsPROMETHEUM, the former name of promethium, a radioactive element also PROMETHIUM
lanthanidea rare-earth element
lanthanidesLANTHANIDE, a rare-earth element
terbiumsa metallic element of the rare-earth group see element table
lanthanumThe chemical element of atomic number 57, a silvery-white rare earth metal
lanthanuma rare element of the group of the earth metals, allied to aluminium
lanthanumsLANTHANUM, a rare element of the group of the earth metals, allied to aluminium
holmiuma metallic element of the rare-earth group that forms highly magnetic compounds and is obtained especially from monazite see element table
holmiumsa metallic element of the rare-earth group that forms highly magnetic compounds and is obtained especially from monazite see element table
didymiumA mixture containing the rare earth elements praseodymium and neodymium, used to color glass for optical filters. It was originally regarded as a single element
yttriumsa metallic element usually included in the rare-earth group that occurs usually with other rare earth elements in minerals and is used especially in phosphors, YAG lasers, and superalloys see element table