Gaseous elements are a group of chemical elements that exist in the gaseous state at standard temperature and pressure. The crossword solutions for the term gaseous element include ARGON (5 letters), OXYGEN (6 letters), XENON (5 letters), NITROGEN (8 letters), KRYPTON (7 letters), NEON (4 letters), CHLORINE (8 letters), HELIUM (6 letters), HYDROGEN (8 letters), Fluorine (8 letters), Niton (5 letters), and RADON (5 letters). These elements are all found in the atmosphere and are essential to life on Earth.