Question

who developmendall periodic table??​

Answer 1

Answer:

Dimitri Mendeleev

In 1869 Russian chemist Dimitri Mendeleev started the development of the periodic table, arranging chemical elements by atomic mass. He predicted the discovery of other elements, and left spaces open in his periodic table for them.

HOPE IT HELPS.....

Answer 2

Explanation:

Dimitri Mendeleev develop all The periodic table which contains chemical elements by atomic Mass.