As you move down a group in the periodic table, the covalent radius increases ... These electrons screen or shield the outer electrons from the nuclear charge.

These are two chemical elements that are very difficult to synthesize and are at the heavier end of the periodic table of ...

When the first periodic table was formulated by Mendeleev ... But in 1956, the Japanese radiochemist Paul Kuroda predicted that a natural nuclear reactor might once have existed deep within ...

Element 114 sits in an island of stability, a position in the periodic table where a spherical nuclear configuration suggests that half lives should be relatively long. That word 'relatively' is ...

And the nuclear collisions used to make them created only about one atom per hour. Yet, with just seven fleeting atoms of seaborgium to work with, the researchers figured out that it is a metal ...