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 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 ...

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 ...

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

MANY arrangements have been suggested, which include the radio-active elements in the periodic table. So far as I am aware, these have all attempted to confine each space in the table to a single ...

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known as "element 120," which would be so hefty that it would need to be put in a new row on the periodic table of elements.