Crossword Clue:

pertaining to rubidium a metallic element

AnswerCrossword Clue
YTTERBICPertaining to a rare metallic element.
SODIOA metallic element, to Columbus
URANICPertaining to element 92
BARICPertaining to element 56
SILICICPertaining to the second most common element in the Earth's crust