Element Used to Make Balloons Float
This page is the CodyCross answer for the clue below from Fantasy World , Group 864, Puzzle 4 (Castle Dungeon).
Question is: Element Used to Make Balloons Float
and the answer is: HELIUM
Word Meaning:
HELIUM — (uncountable) The second-lightest chemical element (symbol He), with an atomic number of 2 and atomic weight of 4.002602, a colorless, odorless and inert noble gas.
Definitions from Wiktionary.