The George Herbert Jones Laboratory, at 5747 S. Ellis Avenue, Chicago, Illinois, is a facility building of the University of Chicago. Room 405 of the building was named a National Historic Landmark in May 1967. Flag Seal Nickname: The Windy City Motto: Urbs In Horto (Latin: City in a Garden), I Will Location Location in Chicagoland and northern Illinois Coordinates , Government Country State Counties United States Illinois Cook, DuPage Mayor Richard M. Daley (D) Geographical characteristics Area     City 606. ... The University of Chicago is a private university located principally in the Hyde Park neighborhood of Chicago, Illinois. ... USS Constitution. ...

The Jones Laboratory was built in 1928-1929 as facility and instructional space for the university's staff of research chemists and graduate students in chemistry. Chemist Julie Perkins of Lawrence Livermore National Laboratory pours from a Florence flask. ... Chemistry (derived from alchemy) is the science of matter at or near the atomic scale. ...

As part of the U.S. War Department's Manhattan Project, University of Chicago chemists began to study the newly manufactured radioactive element, plutonium. Room 405 was the site where, for the first time, a trace quantity of this new element was isolated and measured in September 1942. This procedure enabled chemists to determine the new element's atomic weight. The Manhattan Project resulted in the development of the first nuclear weapons, and the first-ever nuclear detonation at the Trinity test of July 16, 1945. ... General Name, Symbol, Number plutonium, Pu, 94 Chemical series actinides Group, Period, Block n/a, 7, f Appearance silvery white Atomic mass (244) g/mol Electron configuration [Rn] 5f6 7s2 Electrons per shell 2, 8, 18, 32, 24, 8, 2 Physical properties Phase solid Density (near r. ... ...

Physicist Glenn Seaborg said of this event: "These memorable days will go down in scientific history to mark the first sight of a synthetic element, and the first isolation of a weighable amount of an artifically produced isotope of any element." Glenn Theodore Seaborg (April 19, 1912 – February 25, 1999) was an American atomic scientist. ... The chemical elements labelled as synthetic are unstable, with a half-life so short (ranging from a fraction of millisecond to a few million years) relative to the age of the Earth that any atoms of that element that may have been present when the Earth formed have long since... Isotopes are forms of an element, therefore their nuclei have the same atomic number — the number of protons in the nucleus — but different mass numbers because they contain different numbers of neutrons. ...

The U.S. Department of Energy remediated Jones Laboratory in the 1980s by studying and removing almost all of the building's World War II-era radioactive waste. The remediation took place in 1982, 1983, and 1987. [1]. The United States Department of Energy (DOE) is a Cabinet-level department of the United States government responsible for energy policy and nuclear safety. ...