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jan 1, 1863 - Grupos

Description:

el químico inglés, John Newlands clasificó los elementos establecidos en varios grupos proponiendo la Ley de Octavas, conformado por elementos de masa atómica creciente, donde ciertas propiedades se repetían cada 8 elementos.

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Bysamuel santa
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jan 1, 1863
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~ 162 years ago
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