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Can you name everything from Ac to Zr? Test your knowledge of the periodic table and see if you can top the leaderboard ...
Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications. Skip to main content Open menu Close menu ...
The periodic table as we know it is widely credited to Dmitri Mendeleev, a Russian chemist who kept reference cards on the elements and their atomic weight. In 1869, he noticed that the elements ...
Naturally occurring superheavy elements beyond those listed in the periodic table could potentially explain why asteroid 33 Polyhymnia is so dense, new research suggests.
The main groups are numbered from 1 to 7 going from left to right, and the last group on the right is group 0. ... Groups in the periodic table contain elements with similar properties.
Many of the elements were synthesized using an Oak Ridge reactor. Nine elements on periodic table have been discovered using Oak Ridge National Lab isotopes Skip to main content ...