But how many of these elements do you know? Test your knowledge and compete with other Live Science readers to see who can ...

meaning they don't react with any other elements. There are some exceptions to this rule in the transition elements, which fill the shorter columns at the center of the periodic table. These ...

as well as other properties. What made Mendeleev’s table special was his recognition that the periodic system was strong enough to predict undiscovered elements, which he left holes for ...

The periodic table stares down from the walls ... although he rather overdid the guess work with suggestions for elements lighter than hydrogen and another sitting between hydrogen and helium ...

With element 117, the periodic table is complete for the first time ... did not resemble those of other elements in the same column of the table. The reason is that some of the electrons orbiting ...

And it may also be that the current upper end of the periodic table is just another such gap, beyond which may exist an island of stability containing useful elements never before encountered.

In other words, it contains elements not on the periodic table at all. These elements would be stable around atomic number 164, which is far denser that Osmium, the densest known naturally ...

In the periodic table of elements there is one golden rule for carbon, oxygen and other light elements: Under high pressures, they have similar structures to heavier elements in the same group of ...

Humanity, firmly bound to its expansive use of the periodic table The study looks back ... to using lots of other elements, notably including those known as rare earth elements," says Jordi ...

and any other information you find important. Some online periodic tables can be overwhelming for middle school students. This colorful Interactive Periodic Table of the Elements contains enough ...