These elements, with atomic numbers of 113, 115, 117, and 118 comprise the missing parts of period 7 – the lowest row – of the periodic table.

Periods and families in the periodic table are described. Organization of the Periodic Table: Periods and families in the periodic table are described. Students learn to determine the number of ...

First established in 1869, the periodic table quickly took the scientific world by storm as a means of properly organizing elements. Beyond being a helpful learning tool, the periodic table ...

With the discoveries now confirmed, "The 7th period of the periodic table of elements is complete," according to the International Union of Pure and Applied Chemistry.

Classroom and educational resources to engage students ages 15–18 with the periodic table.

Four new elements have been added to the periodic table, finally rounding out the chemical table’s seventh row, officials said.

The International Union of Pure and Applied Chemistry, the century-old organization charged with maintaining the periodic table, finally announced it had approved the names of four new elements.

Today’s periodic table. Offnfopt/Wikipedia But once you give Mendeleev’s table a 90-degree turn, the similarity to the modern version becomes apparent. For example, the halogens – fluorine ...

Four synthetic elements on the periodic table received their new names and atomic symbols, chemistry’s international standards organization announced Wednesday.

New atom-by-atom technique demonstrated for the first time with nobelium might ensure that elements at the bottom of the table are grouped correctly ...