But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can ...

Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications. When you purchase through links on our site ...

The periodic table of the elements, principally created by the Russian chemist, Dmitry Mendeleev (1834-1907), celebrated its 150th anniversary last year. It would be hard to overstate its importance ...

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 ...

mass number = protons + neutrons. Name the first 20 elements. The first 20 elements of the periodic table are as follows: H – Hydrogen, He – Helium, Li – Lithium, Be – Beryllium ...

A new study lays the groundwork to expand the periodic table with a search for element 120, to be made by slamming electrically charged titanium atoms, or ions, into a californium target.

the highest atomic number in the periodic table. But element 61 was still not known to exist. During the Manhattan Project, workers in Oak Ridge built the Graphite Reactor in 1943, then called the ...

A new element may soon join the periodic table: an international team of researchers ... to look for the energy signatures for the X-ray radiation predicted to be given off by element 115 as ...

The periodic table is like a map that organizes elements based on their atomic structure and properties. It helps scientists and students study and understand the vast variety of elements and how ...

Naturally occurring superheavy elements beyond those listed in the periodic table could potentially explain why asteroid 33 Polyhymnia is so dense, new research suggests. A handful of asteroids in ...

Most periodic tables tell you the atomic ... provides a bit of geographical context. For each element discovered in modern times, the table shows the country (or countries) of discovery.