Who first isolated noble gases like argon, krypton, and xenon?

Q. Who first isolated noble gases like argon, krypton, and xenon?
Answer: William Ramsay
Notes: William Ramsay isolated noble gases such as argon, neon, krypton, and xenon in the 1890s and was awarded the Nobel Prize in Chemistry in 1904 for this discovery, filling gaps in the periodic table and confirming the presence of Group 18.

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