sentences:  Darleane C. Hoffman was a chemist at Oak Ridge National Laboratory for a year and then joined her husband at the Los Alamos Scientific Laboratory where she began as a staff member in 1953.She became Division Leader of the Chemistry and Nuclear Chemistry Division (Isotope and Nuclear Chemistry Division) in 1979.She left Los Alamos in 1984 to accept appointments as tenured professor in the Department of Chemistry at UC Berkeley and Leader of the Heavy Element Nuclear & Radiochemistry Group at LBNL.