In the 1940's, when the United States was working on the atomic bomb, it was important to enrich the uranium that would be used. Uranium is a relatively heavy element (238.029 g/mol). Compounds formed from the reaction of a metal with a nonmetal (i.e., salts) generally have relatively high melting points and are nonmalleable.
This is true when uranium is reacted with fluorine to produce uranium(III) fluoride (m.p. > 1000 EC). However, for the preceding study, uranium(VI) fluoride was produce, which is a gas at 60 EC. Fully explain why these two different compounds of uranium have significantly different physical properties.© BrainMass Inc. brainmass.com October 10, 2019, 5:27 am ad1c9bdddf
So generally physical properties depend on the type of intermolecular forces present between molecules of a compound. Metals can exist in different oxidation states which then decides the number of bonds formed to other elements. When 2 compounds of the same element are so different in properties, this implies their bonding ...
The expert examines Uranium (III) Flouride and Uranium (VI) Flouride.