For new, human-made heavy elements on the periodic table, being “too ‘big’ for your own good” often means instability and a fleeting existence. The more protons and neutrons scientists squeeze ...

Over 150 years ago, when chemist Dmitri Mendeleev was developing the very first periodic table of elements, he included several empty spaces. Mendeleev, a visionary ...

At the far end of the periodic table is a realm where nothing is quite as it should be. The elements here, starting at atomic number 104 (rutherfordium), have never been found in nature. In fact, they ...

Different elements exist on Earth, each with distinct physical and chemical properties based on their atomic structure. To ...