Question

Who was the first chemist to organize elements by atomic number?

Answer 1

Dmitri Ivanovich Mendeleev was a famous Russian scientist, who created the periodic table (in which the elements are orbanized by their atomic number).

Answer 2

The chemist that made and organized the periodic table was Mendeleev. He organized the periodic table of elements from increasing atomic number. He also included groups and periods, as groups contained the elements that had similar properties.