Question

the modern periodic table is arranged in order of increasing atomic

charge

mass

radius

number

Explanation:

The modern periodic table arranges elements based on the fundamental property of atomic number. Atomic number is defined as the number of protons in an atom's nucleus, which uniquely identifies an element. This arrangement allows for the periodic repetition of chemical and physical properties as one moves across the table. In contrast, atomic charge is not a standard organizing principle; atomic mass was used in early versions but led to inconsistencies (e.g., tellurium and iodine); and atomic radius varies periodically but is a result of the arrangement by atomic number, not the organizing factor itself.

Answer:

number