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Uranium (III) Flouride and Uranium (VI) Flouride

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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.

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The expert examines Uranium (III) Flouride and Uranium (VI) Flouride.

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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 ...

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