Atomic Number and Mass Number of Elements: Atoms are the building blocks of matter. They are responsible for the format of all living and non-living things. Understanding their molecular structure and ...

The heaviest element that humans have ever found is called oganesson. Each atom of the stuff packs a whopping 118 protons into its dense center. In contrast, hydrogen—the most abundant element in the ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...

If you've learned all the elements from actinium to zirconium, it's time to head back to the periodic table, where there's a new, extremely heavy element in town. In case you forgot your high school ...

One of the largest atomic nuclei known could lead to the discovery of superheavy elements that do not immediately decay. Physicists have created one of the heaviest elements yet, an atom with 117 ...