The F-Sub level
Uraniun and plutonion was used.
The ones used againgst mankind in Japan were uraniun and plutoniun.
Uranium can react with the majority of non-metals (excepting noble gases); uraniun can form alloys with all metals.
Some uranium salts: uranyl nitrate, uranyl acetate, uranyl sulphate, uranium tetrachloride, uranium hexafluoride, uranium iodide, uranium tetrafluoride, uranyl phosphate, uranyl carbonate, and many others.
A monkey that begins with the letter T is a Tamarin.
Uranium (pronounced is a silvery-white metallic chemical element in the actinide series of the periodic table. Thorium is a naturally occurring, slightly radioactive metal, which has been successfully used as an alternative nuclear fuel to uranium.
Because of their shapes. Fat Man used plutonium. A sphere of plutonium was surrounded by conventional explosives which were designed to send the force of their explosion inward to crush the sphere into a smaller shape (thus higher density) in order to trigger the nuclear reaction. Thus the bomb had a very rounded shape to it, suggestive of a fat man. In contrast the other bomb, which used uranium, had the nuclear reaction triggered by firing a small slug of uraniun down a track into a larger mass of the same element. Thus that bomb looked long and slender by comparison and so picked up the moniker Little Boy in contrast. Michael Montagne