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 ...

At that time, he had only 50 elements to arrange ... The zigzag, staircase, line in the diagram of the periodic table above separates the metals, on the left, from non-metals, on the right.

More than 75 years after its initial discovery, scientists have created an organometallic molecule containing the ...

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

New discoveries continuously refine our perspective, with many breakthroughs reported regularly. Whether revolutionary or ...

1. Periodic Table as Arranged by Mendelejeff attention to the fact that “the eighth element, starting from a given one, is a kind of repetition of the first, like the eighth note of an octave in ...

Einsteinium-255, produced through irradiation in ILL’s high-flux reactor, provided a continuous supply of fermium-255, ...

Electronegativity, an essential characteristic of all elements in the periodic table, measures an atom's ability to attract electrons towards itself within a chemical bond. This vital theoretical ...

You interact with about two-thirds of the elements of the periodic table every day. Some, like carbon, oxygen, and nitrogen, make up our bodies and the air we breathe. Yet there is also a class of ...