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The solid form of mixed uranium oxide, which is produced from uranium ore in the uranium recovery (milling) process.

The material is a mixture of uranium oxides, which can vary in proportion and color from yellow to orange to dark green (blackish) depending on the temperature at which the material is dried (which affects the level of hydration and impurities), with higher drying temperatures producing a darker and less soluble material.

Yellowcake was commonly referred to as U3O8, because that chemical compound historically comprised the majority of the yellowcake produced by uranium recovery facilities utilizing conventional milling methods.

Most modern uranium recovery facilities utilize in situ recovery methods and produce a yellowish compound comprised mostly of uranyl peroxide dihydrate. This material is then transported to a uranium conversion facility, where it is transformed into uranium hexafluoride (UF6), in preparation for fabricating fuel for nuclear reactors.

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Enantiomer

One of the two mirror-image forms of an optically active molecule.

Ligand

A Lewis base in a coordination compound.

Ionization Energy

The minimum amount of energy required to remove the most loosely held electron of an isolated gaseous atom or ion.

Low Spin Complex

Crystal field designation for an inner orbital complex, contains electrons paired t2g orbitals before eg orbitals are occupied in octahedral complexes.

Saccharic acid

A white, needlelike, crystalline, water-soluble solid or syrup, C6H10O8, usually made by the oxidation of cane sugar, glucose, or starch by nitric acid. Also called "Glucaric acid."

Mother Nuclide

Nuclide that undergoes nuclear decay.

Electrolysis

Process that occurs in electrolytic cells.

Concentration

Amount of solute per unit volume or mass of solvent or of solution.

End Point

The point at which an indicator changes colour and a titration is stopped.

Electronic Transition

The transfer of an electron from one energy level to another.