![]() Mendelevium still remains the heaviest element to have been identified first by chemical rather than nuclear or physical techniques. The discoverers proposed the name mendelevium to honor the predictive power of the Mendeleev Periodic Table. It is noteworthy that the element with Z =101 (mendelevium) was identified in 1955 using chemical techniques. The value, as well as the sometimes negative effects, of periodic tables in guiding the discovery of new elements based on their predicted chemical properties is assessed. The history of the development of periodic tables of the chemical elements is briefly reviewed beginning with the presentation by Dmitri Mendeleev and his associate Nikolai Menshutkin of their original 1869 table based on atomic weights. ![]() It also marks the 175 th anniversary of his birth in Tolbosk, Siberia. ![]() This year (2009) marks the 140 th Anniversary of Mendeleev's original 1869 periodic table of the elements based on atomic weights.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |