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 ...

And with a single announcement, millions of text books around the world have been made incomplete—out of date. This comes as four new elements are added to the periodic table, finally completing the ...

Break out the champagne; the 7th row of the periodic table has been completed with the addition of four new elements. While their existence had been predicted before, they have only now been ...

The seventh row of the periodic table of elements has finally been completed, thanks to a group of Japanese, Russian and American researchers. The new substances discovered still have no official ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

One hundred fifty years after Russian chemist Dmitri Mendeleev published his system for neatly arranging the elements, the periodic table it gave birth to hangs in every chemistry classroom in the ...

It’s been almost six years since chemists have added to the periodic table, but the recent confirmation of four new elements not only ends the drought, it completes the seventh row of the table. Any ...