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Module 1: Historia y desarrollo de la teoría atómica

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XSIQ
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Chemistry - Ramsay

Ramsay

William Ramsay's discovery of argon and the other noble gases had its
basis in emission spectra. When he had removed oxygen, dust, water vapour
and nitrogen from a sample of air, Ramsay was surprised to find that the
emission spectrum of the residue contained lines not produced by any of the
known elements. This element was called argon (from the Greek, _argos_,
inactive).

Having discovered argon, Ramsay then searched for other members of what he
considered to be a new group of elements at the far right of the periodic
table. Ramsay showed that the gas given off by some uranium minerals was a
new noble gas of atomic mass 4. Its emission spectrum was found to be
identical with that of previously detected only in the sun. Eventually
krypton, neon, xenon and radon were discovered.

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