Question

What were the criteria used by Mendeleev in creating his Periodic table? ​

Answer 1

Answer:

The criterion used by Mendeleev was the atomic mass . He arranged the elements in the increasing order of their atomic mass and hence produced a Periodic table . Elements with similar chemical properties were placed in a group. ... The arrangement of the elements in increasing order was called a periodic table

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Answer 2

Answer:

He arranged his periodic table as increasing their atomic masses.

Explanation:

Mandeleev arrange the periodic table as increasing their atomic masses.In his periodic table there are 9 vertical columns. In his table small periods are put in two lines ,in this way transition elements are mixed with each other......