zahinparvez69
04.02.2021 •
Chemistry
Practice 4
Examine the diagram to see some stars and observation positions,
then choose ALL true statements.
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Ответ:
Johann Wolfgang Döbereiner
Explanation:In 1817, German physicist Johann Wolfgang Döbereiner began to formulate one of the earliest attempts to classify the elements. In 1829, he found that he could form some of the elements into groups of three, with the members of each group having related properties. He termed these groups triads.