For the last fifty or so years, the periodic table has been incomplete. Elements after uranium on the periodic table have been synthesized for the past few decades, but there were always a few missing ...

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Click on the picture above for an interactive guide to the periodic table. Photo: Corbis If someday we communicate with another part of the universe, we can be sure of one thing that both cultures ...

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 they ...

For now, they're known by working names, like ununseptium and ununtrium — two of the four new chemical elements whose discovery has been officially verified. The elements with atomic numbers 113, 115, ...

Prefer Newsweek on Google to see more of our trusted coverage when you search. This year is the International Year of the Periodic Table of Chemical Elements—and today (March 6), the modern version ...

All good geeks are aware of the proliferation of period tables on the internet. The effort that has gone into this is amazing, and as a search-able tool it is great and loads of fun complete with ...