Colourless odourless gaseous element
Crossword Clue and Answers

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Crossword Answers

5 letters

XENON
A colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts

6 letters

OXYGEN
A nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust