from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The divalent radical UO22+.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The divalent radical UO22+, conveniently regarded as a residue of many uranium compounds.
from the GNU version of the Collaborative International Dictionary of English
- n. The radical UO2, conveniently regarded as a residue of many uranium compounds.
from The Century Dictionary and Cyclopedia
- n. Uranium dioxid, UO2, when it occurs as a dyad radical in combination: as, for example, potassium and uranyl sulphate, K2.UO2.(SO4)2.-(H2O)2, the salt with which Becquerel's first experiment in regard to radioactivity was made.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the bivalent radical UO2 which forms salts with acids
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When UF6 comes into contact with water, such as water vapor in the air, the UF6 and water react, forming corrosive hydrogen fluoride (HF) and a uranium-fluoride compound called uranyl fluoride (UO2F2).
When UF6 comes into contact with water, such as water vapor in the air, the UF6 and water react, forming corrosive HF and a uranium-fluoride compound called uranyl fluoride (UO2F2).
This makes the uranyl ion less kidney-toxic and promotes excretion of the nontoxic uranium-carbonate complex.
“DNA damage induced by reactions of uranyl acetate with ascorbate.”
The approved nuclear fuel conversion procedure involved the dissolution of uranium oxide (U3O8) powder in a dissolution tank, then its transfer as pure uranyl nitrate solution to a buffer column for mixing, followed by transfer to a precipitation tank.
After initial refining, which may involve the production of uranyl nitrate, uranium trioxide is reduced in a kiln by hydrogen to uranium dioxide.
The UF6 is first vapourised in autoclaves with steam, then the uranyl fluoride is reacted with hydrogen at 700ºC to yield an HF byproduct for sale and U3O8 powder which is packed into 10-tonne containers for storage.
UF6 is hygroscopic (i.e., moisture-retaining) and, in contact with water (H2O), will decompose immediately to uranyl fluoride (UO2F2).
However, UF6 combines with water to form the soluble reaction products uranyl fluoride (UO2F2) and hydrogen fluoride (HF).
On the more inorganic side, we have systematically explored the geometries, polytopal rearrangement and substitution site preferences of five, six, seven and eight coordination, the factors that influence whether certain ligands will bridge or not, the constraints of metal-metal bonding, and the geometry of uranyl and other actinide complexes.