The periodic table, which organizes all known chemical elements, is primarily arranged in order of increasing what property?

Explanation

The periodic table arranges all known chemical elements primarily in order of increasing atomic number, meaning the number of protons found in the nucleus of each element’s atoms. This organization also naturally groups elements with similar chemical properties into the same vertical columns, since elements with similar outer electron arrangements tend to behave in chemically similar ways. Russian chemist Dmitri Mendeleev is widely credited with developing an early and highly influential version of the periodic table in the nineteenth century. Explore more Everyday Science MCQs on mcqstutor to keep practicing.