Unlike the original attempt by Mendeleev, the modern periodic table arranges elements based on what elemental feature?

Question

Quizplus · Accepted Answer

The modern periodic table arranges elements based on their atomic number, which is the number of protons in an atom's nucleus. This method was adopted because it reflects the elements' properties more accurately than Mendeleev's original organization by atomic mass.

Unlike the Original Attempt by Mendeleev, the Modern Periodic Table