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

This is the second part of a three-part series written by Carolyn Krause. Many of the elements were synthesized using an Oak ...

Watch this video to find out more information on the periodic table close periodic tableA table which lists all of the chemical elements and arranges them in a way that is useful. It allows us to ...

and we get 35.5 to one decimal place and that’s what you’ll see if you look for chlorine in the periodic table. So the relative atomic mass considers all the isotopes of an element.

This year we celebrate the 150 th anniversary of Mendeleev’s achievement in formulating the structure of the periodic table that we use today. He announced his structure in 1869, but the challenge of ...