Meitnerium was discovered in 1982 by Peter Armbruster and Gottfried M�nzenberg
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The element named after Albert is einsteinium, with the symbol Es and atomic number 99. It is a synthetic element that was first discovered through nuclear experiments in the mid-20th century and named in honor of physicist Albert Einstein.
Plutonium is a synthetic element that is radioactive. It does not occur naturally in nature and must be artificially produced through the nuclear fission of uranium.
The last element to be discovered was tennessine, with the atomic number 117. It was officially recognized by the International Union of Pure and Applied Chemistry (IUPAC) in 2016. Tennessine is a synthetic element that is highly unstable and only exists for a very short period of time.
Aluminium is a natural element that is found in the Earth's crust. It is not a synthetic material.
Einsteinium is the element named after Albert Einstein. It is a synthetic element with the atomic number 99.