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 ...

Even though each atom has roughly a whole number of atomic mass units, you will notice that the atomic mass on the periodic ... table and tend to have one valence electron and so carry a charge ...

Fermium studies indicate nuclear shell effects diminish as nuclear mass increases, emphasizing macroscopic influences in ...