Manganese Atomic Number

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Atomic Mass and Atomic Number Worksheet - Key Name of Element Symbol Atomic Number Atomic Mass Protons Neutrons Electrons copper Cu 29 64 29 35 29 tin Sn 50 119 50 69 50 iodine I 53 127 53 74 53 uranium U 92 238 92 146 92 potassium K 19 39 19 20 19 lithium Li 3 7 3 4 3 oxygen O 8 16 8 8 8 gold Au 79 197 79 118 79. Atomic Number: 56 Atomic Mass: 137.327 amu Melting Point: 725.0 °C (998.15 K, 1337.0 °F) Boiling Point: 1140.0 °C (1413.15 K, 2084.0 °F) Number of Protons/Electrons: 56 Number of Neutrons: 81 Classification: Alkaline Earth Crystal Structure: Cubic Density @ 293 K: 3.51 g/cm 3 Color: Silver Atomic Structure. Manganese is a fairly active element and can form a number of oxidation states. The most stable is +2. Where is manganese found on Earth? Manganese is mostly found in the Earth's crust where it is the twelfth most abundant element. It is found in a number of minerals and ores such as pyrolusite, bruanite, and psilomelane. Z = atomic number = number of protons in the nucleus = number of electrons orbiting the nucleus. Manganese Mn Z=25, A=55 Iron Fe Z=26, A=56 Cobalt Co Z=27, A=59. Atomic Number: 25. Name: Manganese. Atomic symbol: Mn. Atomic Weight: 54.9380. Electron configuration: 1s 2 2s 2 2p 6 3s 2 3p 6 3d 5 4s 2. Ionization energies: 717 kJ/mol. Pauling electronegativity: 1.5.

Atomic Number of Manganese is 25.

Manganese Atomic Number

Chemical symbol for Manganese is Mn. Number of protons in Manganese is 25. Atomic weight of Manganese is 54.938044 u or g/mol. Melting point of Manganese is 1244 °C and its the boiling point is 2097 °C.

» Boiling Point» Melting Point» Abundant» State at STP» Discovery Year

About Manganese

Manganese is a hard light grey color metal, often used in various alloys and known as the key element for electromagnetism. The name of this element is derived from Latin word meaning magnet. Manganese is essential for all living creatures and things as it is a part of a large number of enzymes. We consume manganese with food like nuts, parsley, tea, cereals, etc. This element is known as the fifth most abundant element on our planet, and it can be found on the surface of earth both in soils and in a large number of minerals (a big portion of such minerals in mined in Africa). Manganese can also be found in waters of oceans. This element is usually used in alloys with steel to produce super strong products like rails, prison bars, ruffles, safes, etc. Other common alloys of manganese used to industry are the ones with copper and aluminum.

Uses of Manganese

Manganese, silvery white, hard metallic element with the symbol Mn, is very important in steelmaking and in aluminum alloys. It is used in textile printing, paint, dry cell batteries, drink cans, and fertilizers. Manganese sulfate is used as a reducing agent in the manufacturing of paint and varnish dryers. Potassium permanganate is preferred as an antiseptic or disinfectant. Manganese dioxide is mainly used in dry cell batteries such as zinc-carbon batteries. This compound is also used as a pigment in ceramics and glassmaking. Manganese alloys are also used in organic chemistry, Portland cement mixtures and producing pink colored glass.

Compounds with Manganese

  • Mn2O7: Manganese heptoxide
  • Mn3O4: Manganese(II,III) oxide
  • MnO: Manganese(II) oxide
  • MnO2: Manganese(IV) oxide
  • Mn2O7: Manganese(VII) oxide
  • Mn2O3: Manganese(III) oxide
  • MnF2: Manganese(II) fluoride
  • MnO3: Manganese(VI) oxide
  • MnSO4: Manganese sulfate
  • KMnO4: Potassium permanganate

Properties of Manganese Element

Atomic Number (Z)25
Atomic SymbolMn
Atomic Weight54.938044 u
Density7.44 g/cm3
Melting Point (K)1519 K
Melting Point (℃)1244 °C
Boiling Point (K)2334 K
Boiling Point (℃)2097 °C
Heat Capacity0.479 J/g · K
Abundance950 mg/kg
State at STPSolid
DescriptionTransition metal
Electronegativity (Pauling) χ1.55
Ionization Energy (eV)7.43402
Atomic Radius140pm
Covalent Radius139pm
Valence Electrons2
Year of Discovery1774

What is the Boiling Point of Manganese?

Manganese boiling point is 2097 °C. Boiling point of Manganese in Kelvin is 2334 K.

What is the Melting Point of Manganese?

Manganese melting point is 1244 °C. Melting point of Manganese in Kelvin is 1519 K.

How Abundant is Manganese?

Abundant value of Manganese is 950 mg/kg.

What is the State of Manganese at Standard Temperature and Pressure (STP)?

State of Manganese is Solid at standard temperature and pressure at 0℃ and one atmosphere pressure.

When was Manganese Discovered?

Manganese was discovered in 1774.

Element Manganese - Mn

Comprehensive data on the chemical element Manganese is provided on this page; including scores of properties, element names in many languages, most known nuclides of Manganese. Common chemical compounds are also provided for many elements. In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies.

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Overview of Manganese

  • Atomic Number: 25
  • Group: 7
  • Period: 4
  • Series: Transition Metals

Manganese's Name in Other Languages

  • Latin: Manganum
  • Czech: Mangan
  • Croatian: Mangan
  • French: Manganese
  • German: Mangan - r
  • Italian: Manganese
  • Norwegian: Mangan
  • Portuguese: Manganês
  • Russian: Марганец
  • Spanish: Manganesio
  • Swedish: Mangan

Atomic Structure of Manganese

  • Atomic Radius: 1.79Å
  • Atomic Volume: 1.39cm3/mol
  • Covalent Radius: 1.17Å
  • Cross Section (Thermal Neutron Capture) σa/barns: 13.3
  • Crystal Structure: Cubic body centered
  • Electron Configuration:
    1s2 2s2p6 3s2p6d5 4s2
  • Electrons per Energy Level: 2,8,13,2
    Shell Model
  • Ionic Radius: 0.46Å
  • Filling Orbital: 3d5
  • Number of Electrons (with no charge): 25
  • Number of Neutrons (most common/stable nuclide): 30
  • Number of Protons: 25
  • Oxidation States: 7,6,4,2,3
  • Valence Electrons: 3d5 4s2
    Electron Dot Model

Chemical Properties of Manganese

Manganese Atomic Number
  • Electrochemical Equivalent: 0.29282g/amp-hr
  • Electron Work Function: 4.1eV
  • Electronegativity: 1.55 (Pauling); 1.6 (Allrod Rochow)
  • Heat of Fusion: 12.05kJ/mol
  • Incompatibilities:
  • Ionization Potential
    • First: 7.435
    • Second: 15.64
    • Third: 33.667
  • Valence Electron Potential (-eV): 220

Physical Properties of Manganese

  • Atomic Mass Average: 54.93805
  • Boiling Point: 2235K 1962°C 3564°F
  • Coefficient of lineal thermal expansion/K-1: 22E-6
  • Conductivity
    Electrical: 0.00695 106/cm Ω
    Thermal: 0.0782 W/cmK
  • Density: 7.43g/cc @ 300K
  • Description:
    Silver-gray transition metal with a pinkish tinge.
  • Elastic Modulus:
    • Bulk: 120/GPa
    • Rigidity: 79.5/GPa
    • Youngs: 191/GPa
  • Enthalpy of Atomization: 280.3 kJ/mole @ 25°C
  • Enthalpy of Fusion: 14.64 kJ/mole
  • Enthalpy of Vaporization: 219.7 kJ/mole
  • Flammablity Class: Metal: Combustible Solid
  • Freezing Point:see melting point
  • Hardness Scale
    • Brinell: 196 MN m-2
    • Mohs: 6
  • Heat of Vaporization: 226kJ/mol
  • Melting Point: 1517K 1244°C 2271°F
  • Molar Volume: 7.35 cm3/mole
  • Physical State (at 20°C & 1atm): Solid
  • Specific Heat: 0.48J/gK
  • Vapor Pressure = [email protected]°C

Regulatory / Health

  • CAS Number
    • 7439-96-5
  • RTECS: 009275000 (metal)
  • OSHAPermissible Exposure Limit (PEL)
    • Ceiling: 5 mg/m3
  • OSHA PEL Vacated 1989
    • TWA: 1 mg/m3
    • Ceiling: 5 mg/m3
    • STEL: 3 mg/m3
  • NIOSHRecommended Exposure Limit (REL)
    • TWA: 1 mg/m3
    • STEL: 3 mg/m3
    • IDLH: 500 mg/m3
  • Routes of Exposure: Inhalation; Ingestion
  • Target Organs: Respiratory system, central nervous system, blood, kidneys
  • Levels In Humans:
    Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances.
    • Blood/mg dm-3: 0.0016-0.075
    • Bone/p.p.m: 0.2-100
    • Liver/p.p.m: 3.6-9.6
    • Muscle/p.p.m: 0.2-2.3
    • Daily Dietary Intake: 0.4-10 mg
    • Total Mass In Avg. 70kg human: 12 mg

Who / Where / When / How

  • Discoverer: Johann G. Gahn
  • Discovery Location: Stockholm Sweden
  • Discovery Year: 1774
  • Name Origin:
    Latin: mangnes (magnet); Ital. manganese.
  • Abundance of Manganese:
    • Earth's Crust/p.p.m.: 950
    • Seawater/p.p.m.:
      • Atlantic Suface: 0.0001
      • Atlantic Deep: 0.000096
      • Pacific Surface: 0.0001
      • Pacific Deep: 0.00004
    • Atmosphere/p.p.m.: N/A
    • Sun (Relative to H=1E12): 2.63
  • Sources of Manganese:
    Most abundant ores are pyrolusite (MnO2), psilomelane [(BaH2O)2Mn5O10] and rhodochrosite (MnCO3). Annual world production is around 6,220,000 tons. Primary mining areas are South Africa, Russia, Gabon, Australia, Brazil.
  • Uses of Manganese:
    Used in steel, batteries, axles, rail switches, safes, plows and ceramics.
  • Additional Notes:

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Manganese Atomic Number Valence Electrons

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Mass Number Of Manganese


Manganese Dioxide Atomic Number

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