Saturday, December 29, 2012

Mendelevium

Mendelevium

General properties
Name, symbol, number mendelevium, Md, 101
Element category actinide
Group, period, block n/a, 7, f
Standard atomic weight (258)
Electron configuration [Rn] 5f13 7s2
2, 8, 18, 32, 31, 8, 2
History
Discovery Lawrence Berkeley National Laboratory (1955)

Mendelevium is a synthetic element with the symbol Md(formerly Mv) and the atomic number 101. A metallic radioactive transuranic element in the actinide series, mendelevium is usually synthesized by bombarding einsteinium with alpha particles. It was named after Dmitri Ivanovich Mendeleev, who created the Periodic Table. Mendeleev's periodic system is the fundamental way to classify all the chemical elements. The name "mendelevium" was accepted by the International Union of Pure and Applied Chemistry (IUPAC). On the other hand, the proposed symbol "Mv" submitted by the discoverers was not accepted, and IUPAC changed the symbol to "Md" in 1963.

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