Standard atomic weights, those numbers emblazoned under the elements on the periodic table, were once thought of as unchanging constants of nature. But researchers have tweaked the atomic weights of ...

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 ...

In 2002, a team of Russian and American scientists created the first ever atom of oganesson, which is the heaviest chemical element ever recorded to date. With an atomic number of 118, oganesson ...

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 ...

For example, the atomic number of sodium is 11. Every sodium atom has 11 protons and 11 electrons. It has 11 positive charges and 11 negative charges. Atoms of different elements usually have ...

Nineteen elements on the periodic table — including gold, cadmium, arsenic and aluminum — are getting their atomic weights adjusted. The International Union of Pure and Applied Chemistry (IUPAC) ...

To celebrate National Chemistry Week, which runs from Oct. 20-26, we asked a bunch of scientists, with help from the American Chemical Society, what their favorite periodic element is, and why. A ...

Scientists in Sweden say they have confirmed a new, super-heavy element that was first proposed by Russian scientists in 2004. The element with the atomic number 115 has yet to be named. In a press ...

Due to how vast the universe is, is it possible to find an element that is not on the periodic table? originally appeared on Quora: the place to gain and share knowledge, empowering people to learn ...