The periodic table’s arrangement also allows scientists to discern trends in element properties, including electronegativity, ionization energy, and atomic radius. Many scientists worked on the ...

He wrote the properties of the elements on pieces of card and rearranged them until he realised that, by putting them in order of increasing atomic ... diagram of the periodic table above ...

The periodic table of elements is a landmark categorization developed in 1869 by the Russian chemist and inventor Dmitri ...

Across a period from left to right, the covalent radius decreases. As you move from left to right across the periodic table, atoms have more electrons in their outer energy level and more protons ...

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