Dimitri Mendeleev

Dimitri Mendeleev Derived by Dimitri Mendeleev, the periodic table may be one of the most informational tables contained in chemistry. By leaving gaps in the columns and rows, Mendeleev was allowing for the discovery of undiscovered elements of that time. From the properties of the elements surrounding these gaps, Mendeleev was able to predict the properties of these undiscovered elements. Finally, when other scientists discovered the tools of the periodic table, Mendeleev's achievements were recognized. …

…elements are each very unique because they display various qualities that differ within the period and group. They also have different crystal structure and acid-base properties. One very interesting characteristic of transitional elements is the variance in the oxidation states. Each element has multiple oxidation states depending on the element in which the transitional element is combined with. Almost all the electron configurations contain from 1 to 10d electrons in addition to the noble gas configuration.