Rb Is the Chemical Symbol for This
This page is the CodyCross answer for the clue below from Inside the Spaceship, Group 1199, Puzzle 3 (Themed Packs).
Question is: Rb Is the Chemical Symbol for This
and the answer is: RUBIDIUM
Word Meaning:
RUBIDIUM — (uncountable) The chemical element (symbol Rb) with an atomic number of 37. It is a soft, highly reactive alkali metal.
Definitions from Wiktionary.