Question

Who modified the new periodic table and what was its requirements?​

Answer 1

Henry Moseley modified the new periodic table.

He used atomic number instead of atomic mass as the organizing principle.

Answer 2

Answer:

Henry Moseley

Explanation:

this revealed that atomic no. is a more fundamental property of an element than it's atomic mass. the only changes is that all the scientists before the invention of modern periodic table was using atomic mass for arranging elements. But Henry Moseley used atomic no. for arranging the elements.