What is einstienium used as?

Answer 1

Einsteinium (pronounced /aɪnˈstaɪniəm/) is a metallic synthetic element. On the Periodic Table, it is represented by the symbol Es and atomic number 99. It is the seventh transuranic element, and seventh in the series of actinoids. It was named in honor of Albert Einstein.[1]

Answer 2

On the periodic table of elements, rutherfordium is identified with the symbol Rf, and it has an atomic number of 104, placing it beyond the actinide elements. Rutherfordium and other heavier elements are known as transactinide elements. Scientists assume that this element is metallic in nature, and they have made other conjectures about its chemical structure and appearance, but none of these suppositions have been confirmed.

Credit for the discovery of this element is actually contentious. Researchers at a lab in Russia led by G.N. Flerov published the discovery of the element in 1964, proposing "kurchatovium" as a name to honor a famous Russian scientist. In 1969, researchers at the University of California, Berkeley were unable to replicate the work of the Russians, but they did discover some additional isotopes of element 104, proposing "rutherfordium" as a name to honor Ernest Rutherford, a 1908 Nobel Prize winner from New Zealand.

The battle over credit for the discovery of the element went on until the 1990s, when it was decided that both labs should be given credit, and the name "dubnium" was given to element 105 to honor the Russian laboratory. To add to the confusion, some scientists call rutherfordium eka-hafnium.