Argon

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Argon was suspected to be in the air since 1785, although it was not isolated until 1894. Sir William Ramsay and Lord Rayleigh isolated it. They isolated air and took out all of the oxygen, carbon dioxide, water and nitrogen. At that time, Argon was the only gas left inside of the experiment. The symbol for Argon is currently Ar but it was A until 1957.======

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Argon is most known for its work in the insulating field and with the lighting field. It is also known for being a noble gas and having 18 protons. Argon is important to the human kind because it keeps heat inside houses, preventing them from freezing. Argon also kills deadly cancer cells in the body of humans. This gas also helps in the lighting field, and without lights, humans could not see or work when it is dark.======