Americium (Am), element 95 – Learn Acer periodic table

Americium

Actinide, atomic number 95.

Americium is a radioactive transuranic chemical element with symbol Am and atomic number 95. This member of the actinide series is located in the periodic table under the lanthanide element europium, and thus by analogy was named after the Americas. Americium was first produced in 1944 by the group of Glenn T.Seaborg from Berkeley, California, at the metallurgical laboratory of University of Chicago.

Facts

Symbol Am. Atomic mass 243.0 u. Group 3, period 7. Electron configuration [Rn] 5f7 7s2. Electrons per shell 2, 8, 18, 32, 25, 8, 2. State at room temperature: Solid. Melting point 1175.8 °C, boiling point 2606.8 °C. Discovered by Glenn T. Seaborg.

Element data from Wikipedia, CC BY-SA 3.0.