Crossword puzzle clue "first noble gas discovered"

Here are the possible solutions for first noble gas discovered clue

Answer
Clue
Relevancy
argon
Clue
First noble gas discovered
Noble gas
A noble gas
Most common noble gas
Definition
an inert gaseous element
xenon
Clue
Noble gas discovered in 1898
Gas discovered in 1898
neon
Clue
Gas discovered in 1898
Definition
a gaseous element
oxygen
Clue
Gas discovered by Joseph Priestley, d. 1804
Definition
a gaseous element

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