Answer: scandium

AnswerCrossword Clue
SCANDIUMRare-earth metal
SCANDIUMRare earth element
SCANDIUMMetal in aluminum alloys
SCANDIUMRare-earth element named after where it was discovered
scandiumrare, trivalent, metallic element obtained from thortveitite. Symbol: Sc; at. wt.: 44.956; at. no.: 21; sp. gr.: 3.0