Some believe chemical properties should dictate how the elements line up on the periodic table. Others think a more fundamental principle is needed, like electronic configuration or simply atomic ...

A longstanding mystery of the periodic table involves a group of unique elements called lanthanides. Also known as rare earth ...

Ever wondered what makes Hydrogen number 1 on the periodic table? There's a reason. Discover the intelligent design of the periodic table with BBC Bitesize.

Substances have both physical and chemical properties. ... More on Periodic table. Find out more by working through a topic. Developing the periodic table . count. 2 of 6. The modern periodic table .

Scientist propose reordering the 150-year-old periodic table to easily identify materials with useful properties and put an end to longstanding debates of certain elements ...

Material properties change at high pressure. Scientists can generate pressures millions of times above ambient pressure and, in doing so, have found near-room-temperature superconductors ...