Question

Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass

Answer 1

HENRY MOSELEY

Mendeleev constructed the periodic table based on atomic mass. But ,there were many demerits in that periodic table. So,HENRY MOSELEY was scientist ,who proposed that “properties of the elements are the periodic functions of their atomic number”.

Answer 2

John dalton is the first scientist who first all showed that atomic numbers.