Question

Does this arrangement match with pattern the second periodic of modern periodic table

Answer 1

Many scientists give the periodic table such as

(1) Lothar Meyer ,s curve in 1869

D = mass of atom / volume of atom.

(2) Mosley experiment / modern periodic table in 1913.

modern periodic table has 7 period and 9 groups.

(3) A. E. B. De chanchourtois

cylindrical or circular periodical table is based on increasing order of atomic weight.

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