The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

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 ...

The periodic table of elements—also known as Mendeleev’s table—was developed in 1869 by Russian chemist Dmitri Mendeleev. It organizes all known chemical elements by their atomic number ...