William Ramsey

• Between 1893 and 1898, William Ramsay, John Strutt or Lord Rayleigh, and Morris Travers

  made a research not related to the periodic table and worked together to find out if there are

  unidentified elements existing in the atmosphere.
• This was an outgrowth experiment of Lord Henry

  Cvendish on the composition of air, where he was not able to study all the gases.
• In 1894, Ramsay

  and Rayleigh isolated argon from atmospheric nitrogen. Argon, the first noble gas, came from the

  Greek word argos, meaning, “the lazy one”.
• In 1895, he discovered the inert gas helium (derived from

  the Greek word helios, which means “sun”.
• Inert gas of krypton is hidden
• Inert gas of neon is new
• Inert gas of xenon is stranger
• Mendeleev added a new group to

  his periodic table, the Group O or Group VIII for the group of unreactive gases, now called noble

  gases.