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30 дек 1893 г. - William Ramsay discoverded the noble gases.

Описание:

He then added them onto the periodic table.
https://www.sciencelearn.org.nz/resources/1804-development-of-the-periodic-table

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Chemistry Project

1 окт 2018

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30 дек 1893 г.

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~ 131 г назад

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