Home
background
  • Key data; description
  • History
  • hydrogen around us
  • Uses
  • Geology
  • Biology
  • hydrogen compounds
  • Reactions of hydrogen
  • Compounds
  • Bond enthalpies
  • Radii in compounds
  • Lattice energies
  • Reduction potentials
  • nuclear properties
  • NMR
  • Naturally occurring isotopes
  • Radioisotopes
  • electronic properties
  • Electronic configuration
  • Ionization energies
  • Electron affinities
  • Electronegativities
  • Effective nuclear charges
  • Electron binding energies
  • Atom radii
  • Valence shell radii
  • physical properties
  • Bulk properties (density, resistivity, etc.)
  • Thermal properties (melting point, etc.)
  • Thermodynamic properties
  • crystallography
  • Crystal structure
  • Elements

    MANGANESE
    25
    Mn
    54.938049 (9)


    Name: manganeseGroup number: 7
    Symbol: MnGroup name: (none)
    Atomic number: 25Period number: 4
    Atomic weight: 54.938049 (9)Block: d-block
    CAS Registry ID: 7439-96-5Voice:
    Standard state: solid at 298 KColour: silvery metallic
    Classification: MetallicAvailability:

    manganese
    Image adapted with permission from Prof James Marshall"s (U. North Texas, USA) Walking Tour of the elements CD.

    The metal is gray-white, resembling iron, but is harder and very brittle. The metal is reactive chemically, and decomposes cold water slowly. Manganese is widely distributed throughout the animal kingdom. It is an important trace element and may be essential for utilisation of vitamin B. Manganese is present in quantity the floor of oceans. It is an important component of steel.

    Nearing Zero cartoon for manganese
    Nearing Zero cartoon included by kind permission of Nick Kim.

    Isolation

    Here is a brief summary of the isolation of manganese.

    It is not normally necessary to make manganese in the laboratory as it is available commercially. Nearly all manganese produced commercially is used in the steel industry as ferromanganese. This made by the reduction of iron oxide, Fe2O3, and managanese dioxide, MnO2, in appropriate proportions with carbon (as coke) in a blast furnace. Pure manganese is available through the electrolysis of manganese sulphate, MnSO4,

    Fluorides
  • MnF2
  • MnF3
  • MnF4
  • Chlorides
  • MnCl2.4H2O
  • MnCl2
  • MnCl3
  • Bromides
  • MnBr2
  • Iodides
  • MnI2.4H2O
  • MnI2
  • Hydrides
    none listed
    Oxides
  • MnO
  • MnO2
  • Mn2O3
  • Mn2O7
  • Mn3O4
  • Sulfides
  • MnS
  • Selenides
  • MnSe
  • MnSe
  • Tellurides
    none listed
    Nitrides
    none listed






    Our data and resources are taken from Web Elements