The seventh row of the periodic table has been filled after a Japanese team and Russians and Americans working together were credited with the discovery of four ­elements.

Break out the champagne; the 7th row of the periodic table has been completed with the addition of four new elements. While their existence had been predicted before, they have only now been ...

Chemistry textbooks around the world are now out of date, after four new elements were added to the periodic table, completing the table's seventh row. Elements are basic chemical building blocks ...

But even as it is being completed, the table may be losing its power. The discovery of element 117 filled the last remaining gap in the periodic table as we know it.

The first version of Mendeleev’s periodic table, published in 1869, was reportedly completed in just one day. Historians have pieced together what happened during that day.

T he periodic table stares down from the walls of just about every chemistry lab. The credit for its creation generally goes to Dimitri Mendeleev, a Russian chemist who in 1869 wrote out the known ...

A new study lays the groundwork to expand the periodic table with a search for element 120, to be made by slamming electrically charged titanium atoms, or ions, into a californium target.

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 ...

Give each student a Periodic Table of Energy Levels activity sheet. This table contains energy level models for the first 20 elements. The electrons are included only for the atoms at the beginning ...