Although the Periodic Table of Elements is an impressive achievement of human understanding ... First discovered 80 years ago in 1945, Promethium is a lanthanide (one of a series of 15 metallic ...
The periodic table of elements is a landmark categorization developed in 1869 by the Russian chemist and inventor Dmitri Mendeleev. It arranges all natural and synthetic elements by their atomic ...
How far can the periodic table go and will we ever synthesize ... Nobelium is a synthetic chemical element with the atomic number of 102. The element was first synthesized by a team of scientists ...
Where does the periodic table of chemical elements end and which processes lead to the existence ... these mass measurements gave hints about the extra binding energy the shell effect provides. Atomic ...
These are almost one-quarter of the periodic table and are mainly found in the first four periods. Of these, 11 are essential elements that our bodies need in larger amounts: oxygen, carbon ...