Crossword puzzle clue "third noble gas"

Here are the possible solutions for third noble gas clue

Answer
Clue
Relevancy
argon
Clue
Third noble gas
Noble gas
A noble gas
Most common noble gas
Earth's most abundant noble gas
Noble gas, atomic number 18
Noble gas, and a homophonic hint to how this puzzle's four longest answers are formed
Most abundant noble gas in the atmosphere
Definition
an inert gaseous element

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