Elements in the periodic table are arranged in order of increasing atomic number. The atomic number represents the number of protons in an atom's nucleus, uniquely identifying each element.

The periodic table stares down from the walls of just about every chemistry lab. The credit for its creation generally goes to Dimitri Mendeleev, a Russian chemist who in 1869 wrote out the known ...

(Courtesy: iStock/welcomia) To mark 2019 being the International Year of the Periodic Table, members of the Physics World team have been having some chemical “fun” in our self-styled Battle of the ...

The periodic table is on its way to getting a new chemical element. Researchers have been creating man-made elements since the 1950s. Recently, in addition to element 117, some experiments seem ...

It’s not every day an element gets added to the periodic table. The last time it happened was 2016, when four new elements became official. For these elements, reaching the table was an epic ...