Кем был Дмитрий Менделеев?
Получив научное образование в России и Германии, Дмитрий Менделеев стал профессором и проводил исследования в области химии. Менделеев наиболее известен своим открытием периодического закона, который он ввел в 1869 году, и своей формулировкой периодической таблицы элемент…
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