Best Answer: In the most common form of atomic bomb uranium 235 is split by striking it with a low energy neutron. Generally the heavier an element the easier it is to split its atom (fission).
Grainger's headquarters is located in Lake Forest, Illinois.
Grainger County, Tennessee. Grainger County is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 22,657. Its county seat is Rutledge. It is renowned for its tomatoes. Grainger County is included in the Knoxville, TN Metropolitan Statistical Area.