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August 1, 2025
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William Ramsay (Noble Gases) (jan 2, 1894 – jan 1, 1898)

Description:

Ramsay isolated and identified several noble gases, including helium, neon, krypton, and xenon, increasing the elements in the periodic table.

Example: Ramsay discovered neon (Ne), along with other noble gasses like krypton and xenon.

Added to timeline:

Date:

jan 2, 1894
jan 1, 1898
~ 4 years