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13 mai 1887 - The english scientist Henry Moseley ( !887 - 1915 ) discovered that atoms of each element contain a unique positive charged

Description:

Henry Mendeleev

Ajouté au bande de temps:

Jamiyah Polite & Anyliah Middleton

13 oct. 2017

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703

Date:

13 mai 1887

Maintenaint

~ Il y a 138 ans

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