Question

periodic table
the periodic law states that:
a. the periodic table arranges elements into periods and groups.
b. the properties of elements recur periodically based on their metallic qualities.
c. the properties of elements recur periodically when arranged by increasing atomic mass.
d. the properties of elements recur periodically when arranged by increasing atomic number.

Explanation:

The periodic law states that the physical and chemical properties of the elements recur in a systematic and predictable way when the elements are arranged in order of increasing atomic number.

Answer:

D. The properties of elements recur periodically when arranged by increasing atomic number.