How are elements arranged on the periodic table?

Question

A. They are arranged in order from most abundant to very rare and unstable
B. They are arranged in order of the date of discovery
C. They are arranged to highlight similarities between different elements
D. They are arranged to highlight different elements with similar isotopes

Answer 1

C. They are arranged to highlight similarities between different elements.

The periodic table arranges elements based on their atomic number (number of protons) and groups them into columns (groups or families) based on similar chemical properties. Elements in the same group typically exhibit similar behaviors and characteristics.