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Uranyl ion

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Identification
Molecular formula
UO22+
CAS number
22966-80-3
IUPAC name
dioxouranium(2+)
State
State

At room temperature, the uranyl ion is typically encountered in solution as part of uranium ore processing or environmental samples. It exists as a dissolved species in water where it remains stable and highly soluble, making it a common ion in aqueous solutions.

Melting point (Celsius)
0.00
Melting point (Kelvin)
0.00
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
270.03g/mol
Molar mass
270.0300g/mol
Density
6.4100g/cm3
Appearence

The uranyl ion typically appears as a yellow crystalline substance when in solid form. In solution, it can impart a yellow color depending on the concentration of the ion due to the presence of uranium, which is responsible for its distinctive color.

Comment on solubility

Solubility of Dioxouranium(2+)

The solubility of dioxouranium(2+) (UO22+) in various solvents is a subject of considerable interest, particularly in the context of its environmental implications and applications in nuclear chemistry. Understanding its solubility can shed light on its behavior in different systems.

Key Factors Influencing Solubility

  • pH Levels: The solubility of dioxouranium(2+) is significantly affected by the pH of the solution. In acidic conditions, its solubility tends to be higher.
  • Temperature: Like many compounds, an increase in temperature generally enhances solubility.
  • Complex Formation: Dioxouranium(2+) can form complexes with various ions or ligands, which can either increase or decrease its solubility depending on the specific interactions.
  • Presence of Anions: The presence of certain anions can impact the solubility of dioxouranium(2+) by promoting the formation of soluble or insoluble products.

It is noteworthy that dioxouranium(2+) is often found in low concentrations in natural waters, and its solubility plays a critical role in understanding its mobility and reactivity. Studies suggest that “in many chemical environments, UO22+ is relatively soluble,” making it essential to consider when assessing uranium's environmental fate.

In conclusion, the solubility of dioxouranium(2+) is a multifaceted topic that requires consideration of various environmental factors to fully comprehend its behavior in aqueous solutions.

Interesting facts

Interesting Facts About Dioxouranium(2+)

Dioxouranium(2+), often referred to in the context of its role in both inorganic chemistry and radiochemistry, presents several fascinating characteristics and applications that reflect its unique nature in the world of chemical compounds.

Key Characteristics

  • Oxidation State: The +2 oxidation state of uranium in this compound indicates its potential for various chemical reactions, making it a subject of great interest in the study of nuclear chemistry.
  • Reactivity: Dioxouranium(2+) can participate in redox reactions, showcasing its importance in both organic and inorganic synthesis processes.
  • Amphoteric Nature: This compound shows amphoteric behavior, meaning it can react with both acids and bases, further highlighting its versatility in chemical reactions.

Significance in Nuclear Chemistry

As a uranium compound, dioxouranium(2+) holds a significant place in the nuclear industry and has implications in:

  • Nuclear Fuel Processing: The compound is involved in the extraction and processing of uranium, an essential element in nuclear reactors.
  • Environmental Chemistry: Understanding dioxouranium(2+) is crucial for assessing uranium's behavior in the environment, especially concerning its mobility and bioavailability.
  • Waste Management: Knowledge of this compound helps in managing nuclear waste and its safe disposal, thus contributing to environmental safety.

Challenges and Research Opportunities

Working with dioxouranium(2+) presents challenges, particularly:

  • Radioactivity: As a radioactive species, safety must be prioritized in laboratory and industrial settings.
  • Complex Chemistry: The chemistry of uranium is complex, leading to ongoing research into its interactions and compounds, providing vast opportunities for scientists.

In conclusion, the study of dioxouranium(2+) opens new avenues in understanding uranium's chemistry, both for its applications in industry and its implications for environmental sciences. As quoted in the scientific community, "Things that are different are not the same," and dioxouranium(2+) exemplifies this statement with its unique properties and challenges that continue to inspire research and innovation.

Synonyms
Dioxouranium(2+)
uranyl ion
Uranyl ion(2+)
16637-16-4
dioxouranium(VI)
UO2(2+)
dioxidouranium(VI)
uranyl(VI) cation
dioxidouranium(2+)
uranyl(2+) ion
uranyl(2+)
Uranium(2+), dioxo-
UO2+
CHEBI:43515
DTXSID301020177
[UO2](2+)
Q27104509