Chapters: 0:00 - Periodic table 2:21 - Where did the original lightest atoms come from? 6:05 - What atoms are produced in the ...

Add Yahoo as a preferred source to see more of our stories on Google. The periodic table, also called the periodic table of elements, is an organized arrangement of the 118 known chemical elements.

At the far end of the periodic table is a realm where nothing is quite as it should be. The elements here, starting at atomic number 104 (rutherfordium), have never been found in nature. In fact, they ...