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Manganese(II) ion

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Identification
Molecular formula
Mn2+
CAS number
16397-91-4
IUPAC name
manganese(2+)
State
State

At room temperature, the manganese(II) ion is not found as a pure substance but typically in solution as a hydrated ion or as part of a solid salt.

Melting point (Celsius)
1 246.00
Melting point (Kelvin)
1 519.00
Boiling point (Celsius)
1 962.00
Boiling point (Kelvin)
2 235.00
General information
Molecular weight
54.94g/mol
Molar mass
54.9380g/mol
Density
7.2100g/cm3
Appearence

The manganese(II) ion is a typical pale pink color, which is characteristic of manganese in its +2 oxidation state. This coloration is noticeable in its solutions, such as manganese(II) sulfate or chloride dissolved in water.

Comment on solubility

Solubility of Manganese(II) Compounds

Manganese(II), denoted as Mn2+, frequently forms a variety of compounds with differing solubility characteristics. The solubility of manganese(II) salts can significantly vary based on their anionic counterparts. Here’s a closer look at some general trends:

  • Manganese(II) Chloride (MnCl2): Highly soluble in water, making it an ideal choice for many applications.
  • Manganese(II) Sulfate (MnSO4): Also very soluble, widely used in fertilizers and dietary supplements.
  • Manganese(II) Oxide (MnO): Sparingly soluble in water, illustrating the vast difference in solubility within manganese compounds.
  • Manganese(II) Carbonate (MnCO3): Insoluble in water, highlighting the impact of certain anions on overall solubility.

It's essential to note that many manganese(II) salts are affected by factors such as temperature and pH. For instance, manganese(II) solubility tends to increase in acidic conditions. Additionally, complexation with ligands can also enhance solubility, allowing manganese(II) to remain in solution in various environments.

In summary, the solubility of Mn2+ and its compounds can be summarized as follows:

  1. **High solubility**: MnCl2 and MnSO4
  2. **Variable solubility**: Dependent on pH and ionic interactions
  3. **Low solubility**: MnO and MnCO3

Understanding these solubility dynamics is crucial for applications in agriculture, industry, and health sciences.

Interesting facts

Interesting Facts about Manganese(II) Ion

Manganese(II), represented as Mn2+, is a fascinating transition metal ion with a variety of important roles in both chemistry and biology. Here are some intriguing points that highlight its significance:

  • Essential Nutrient: Manganese is an essential trace element for living organisms. It plays a critical role in processes such as metabolism and bone formation.
  • Enzymatic Power: Mn2+ is a cofactor for several enzymes, including superoxide dismutase (SOD), which helps protect cells from oxidative stress.
  • Industrial Applications: Manganese(II) compounds are widely used in the manufacture of batteries, ceramics, and as catalysts in chemical reactions.
  • Colorful Chemistry: Manganese ions exhibit various oxidation states, and Mn2+ typically gives rise to light pink to pale violet colors in solutions, making it useful in coloring glass and ceramics.
  • Geochemical Significance: Manganese is a vital component in the Earth's crust and is commonly found in minerals; thus, it plays an important role in the geochemical cycles.

In addition to these points, manganese's involvement in the production of steel and other alloys showcases its importance in materials science. As a transition metal, its ability to lose and gain electrons allows for versatile bonding behavior, making it a subject of interest for researchers studying metal complexes and catalysis.

Quote: "Manganese is often overlooked, yet its contributions to both nature and technology are indispensable." With this in mind, the study of Mn2+ continues to be a rich field for investigation.

Synonyms
Manganese(2+)
Manganese(II)
Manganous ion
Manganese (Mn2+)
Manganese ion(2+)
Mn2+
MANGANESE(II) ION
Manganese, ion (Mn2+)
16397-91-4
Manganese cation (2+)
Manganous cation
Manganese dication
Mn(II)
Manganese cation (Mn2+)
Mn++
Mn(2+)
H6EP7W5457
Manganese cation
Manganese(2+)ions
manganese ion
UNII-H6EP7W5457
Manganous dication
manganese (II)
MnII
15365-82-9
Mn(II) (incorrect)
ion (Mn2+)
at. no. 25
Hexaaquamanganese(2+) ion
SCHEMBL29421166
CHEBI:29035
Manganese(2+), hexaaqua-, ion
DTXSID00167687
DB06757
C19610
Q27095727