An alternative periodic table of elements focusing on highly charged ions reveals new science that could support the quest ...

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

Many scientists worked on the problem of organizing the elements, but Dmitri Mendeleev published his first version of the periodic table in 1869, and is most often credited as its inventor. Since then ...

Group 7 of the periodic table is something of an oddity. When the first periodic table was formulated by Mendeleev, it was the only group that contained just a single known element — manganese ...