The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

Many periodic tables include the atomic number (number of protons) and atomic weight (which depends on protons and neutrons). Sometimes they list the full name of each element, but often only include ...

In their new version of the periodic table, Allahyari and Oganov arranged the elements only based on their radius and electronegativity properties. " [The] clusters indicate chemistries that are ...