The periodic table is central to our understanding and classification of the world around us. The power of the periodic table lies not in the fact that it contains all known elements, but in that the ...

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 ...

Substances have both physical and chemical properties. Developing the periodic table The periodic table was developed by grouping elements with similar properties. This, together with a later ...

Crucial to all life on Earth, the 15th element of phosphorus remains a real puzzle for astronomers. Specialized space telescopes are needed to shed light on the issue.

Across a period from left to right, the covalent radius decreases. As you move from left to right across the periodic table, atoms have more electrons in their outer energy level and more protons ...

As part of the ChemClub's 10 th Anniversary (2015-2016), we asked clubs to create elements of the periodic table featuring a mole. To celebrate the International Year of the Periodic Table (IYPT) in ...