3 years ago

How did Mendeleev arrange the known elements?

Chemistry

2 answers:

Agata [3.3K]3 years ago

4 0

In order of relative atomic mass.

klemol [59]3 years ago

4 0

Mendeleev arranged elements in rows in increasing order according to their atomic number, while also grouping elements with similar chemical properties in columns.

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Answer:

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2Cl2(g) + 7O2(g) + 130kcal → 2Cl2O7(g)

Rearranging we get,

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