F11

F11 is an heavy isotope of flourine. Its particular properties allow fusion reactors to be ship sized and function as both power and thrust generators. This enables interstellar travel in the Galactic Union.

F11 is one of the ratest elements in the galaxy as it is a byproduct of novas and failed stellar ignition. Due to it creation deep in gas giants such as Jupitor (in small quantites) and the remains of starts that have shed their outer shells, F11 is difficult to find and extract. This results in it being one of the most expensive elements in common trade.