It Makes Balloons Float
This page is the CodyCross answer for the clue below from Life in the Castle, Group 2311, Puzzle 3 (Rightful Heir).
Question
It Makes Balloons Float
Answer
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.