Manganese

Manganese (Mn)

Manganese is the 25th element in the periodic table and has a symbol of Mn and atomic number of 25. It has an atomic weight of 54.93804 and a mass number of 55. Manganese has twenty-five protons and thirty neutrons in its nucleus, and twenty-five electrons in four shells. It is located in group seven, period four and block d of the periodic table. Grey brittle metallic transition element. Rather electropositive, combines with some non-metals when heated. Discovered in 1774 by Scheele.
Atomic Number25
Atomic Weight54.938044
Mass Number55
Group7
Period4
Blockd
Protons25 p+
Neutrons30 n0
Electrons25 e-
Animated Bohr Model of Mn (Manganese)

Physical Properties

Atomic Radius
140 pm
Molar Volume
Covalent Radius
119 pm
Metallic Radius
118 pm
Ionic Radius
66 pm
Crystal Radius
80 pm
Van der Waals Radius
205 pm
Density
7.3 g/cm³
Atomic Radii of the Elements: Manganese0102030405060708090100110120130140150160170180190200210pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals Radius

Chemical Properties

Energy
Proton Affinity
797.3 kJ/mol
Electron Affinity
Ionization Energy
7.434018 eV/particle
Ionization Energies of Mn (Manganese)
Heat of Vaporization
221 kJ/mol
Heat of Fusion
13.4 kJ/mol
Heat of Formation
283.3 kJ/mol
Electrons
Electron Shells2, 8, 13, 2
Bohr Model: Mn (Manganese)
Valence Electrons2
Lewis Structure: Mn (Manganese)
Electron Configuration[Ar] 3d5 4s2
1s2 2s2 2p6 3s2 3p6 3d5 4s2
Enhanced Bohr Model of Mn (Manganese)
Orbital Diagram of Mn (Manganese)
Oxidation States-3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7
Electronegativity
1.55
Electrophilicity Index
States of Matter
PhaseSolid
Gas Phase
Boiling Point
2,334.15 K
Melting Point
1,519.15 K
Critical Pressure
Critical Temperature
4,325.15 K
Triple Point
Visual

Manganese is a Silver. Mn has a CPK of #808090, Jmol of #9c7ac7, and MOLCAS GV of #9c7ac7. The Appearance of Element 25 is silvery metallic.

Color
Silver
Appearancesilvery metallic
Refractive Index
Thermodynamic Properties
Thermal Conductivity
Thermal Expansion
0.0000217 1/K
Molar Heat Capacity
26.32 J/(mol K)
Specific Heat Capacity
0.479 J/(g⋅K)
Heat Capacity Ratio (Adiabatic Index)
Electrical Properties
TypeConductor
Electrical Conductivity
0.62 MS/m
Electrical Resistivity
0.0000016 m Ω
Superconducting Point
Magnetism
Typeparamagnetic
Magnetic Susceptibility (Mass)
0.000000121 m³/Kg
Magnetic Susceptibility (Molar)
0.0000000066475 m³/mol
Magnetic Susceptibility (Volume)
0.00090387
Magnetic Ordering
Curie Point
Neel Point
100 K
Structure

The Crystal Structure of Manganese is CUB. The lattice constant of Mn is 8.89 Å. The lattice angles of Element 25 are π/2, π/2, π/2.

Crystal StructureBody Centered Cubic (CUB)
Lattice Constant
8.89 Å
Lattice Anglesπ/2, π/2, π/2
Mechanical Properties

Manganese has a Brinell of 196 MPa, and Mohs hardness of 6 MPa. The Bulk Modulus of Mn is 120 GPa. The Young Modulus of Element 25 is 198 GPa. The Speed of Sound of Manganese (Mn) is 5150 m/s.

Hardness
6 MPa
Bulk Modulus
120 GPa
Shear Modulus
Young's Modulus
198 GPa
Poisson Ratio
Speed of Sound
5,150 m/s
Classification

The CAS Group of Manganese is VIIA. The IUPAC Group of Mn is VIIB. The Glawe Number of Element 25 is 72. The Mendeleev Number of Manganese (Mn) is 55. The Pettifor Number of Manganese is 60. The Geochemical Class of Mn is first series transition metal. The Goldschmidt Class of Element 25 is siderophile.

CategoryTransition metals, Transition metals
CAS GroupVIIA
IUPAC GroupVIIB
Glawe Number72
Mendeleev Number55
Pettifor Number60
Geochemical Classfirst series transition metal
Goldschmidt Classsiderophile

Other

The Gas Basicity of Manganese is 774.4 kJ/mol. The Dipole Polarizability of Mn is 68 plus or minus 9 a₀. Element 25 has a C6 Dispersion Coefficient (CD) of 552 a₀, and C6 Dispersion Coefficient (GB) of 635 a₀. The Allotropes of Manganese (Mn) is . The Neutron Cross Section of Manganese is 13.3. The Neutron Mass Absorption of Mn is 0.0083. The Quantum Numbers of Element 25 is 6S5/2. The Space Group of Manganese (Mn) is 217 (I_43m).

Gas Basicity
774.4 kJ/mol
Dipole Polarizability
68 ± 9 a₀
C6 Dispersion Coefficient
552 a₀
Allotropes
Neutron Cross Section
13.3
Neutron Mass Absorption
0.0083
Quantum Numbers6S5/2
Space Group217 (I_43m)

Isotopes of Manganese

Stable Isotopes1
Unstable Isotopes30
Natural Isotopes1

43Mn

Mass Number43
Neutron Number18
Relative Atomic Mass
43.018647 ± 0.000429 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin5/2
Quadrupole Moment
Discovery Year
Parity-

Decay ModeIntensity
p (proton emission)

44Mn

Mass Number44
Neutron Number19
Relative Atomic Mass
44.008009 ± 0.000322 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin2
Quadrupole Moment
Discovery Year
Parity-

Decay ModeIntensity
p (proton emission)

45Mn

Mass Number45
Neutron Number20
Relative Atomic Mass
44.994654 ± 0.000322 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin5/2
Quadrupole Moment
Discovery Year
Parity-

Decay ModeIntensity
p (proton emission)

46Mn

Mass Number46
Neutron Number21
Relative Atomic Mass
45.986669 ± 0.000093 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
36.2 ± 0.4 ms
Spin4
Quadrupole Moment
Discovery Year1987
Parity+

Decay ModeIntensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)57%
2p (2-proton emission)18%
β+α (β+-delayed α emission)

47Mn

Mass Number47
Neutron Number22
Relative Atomic Mass
46.975774 ± 0.000034 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
88 ± 1.3 ms
Spin5/2
Quadrupole Moment
Discovery Year1987
Parity-

Decay ModeIntensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)1.7%

48Mn

Mass Number48
Neutron Number23
Relative Atomic Mass
47.96854876 ± 0.000007191 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
158.1 ± 2.2 ms
Spin4
Quadrupole Moment
Discovery Year1987
Parity+

Decay ModeIntensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)0.28%
β+α (β+-delayed α emission)6%

49Mn

Mass Number49
Neutron Number24
Relative Atomic Mass
48.95961335 ± 0.000002377 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
382 ± 7 ms
Spin5/2
Quadrupole Moment
Discovery Year1970
Parity-

Decay ModeIntensity
β+ (β+ decay; β+ = ϵ + e+)100%

50Mn

Mass Number50
Neutron Number25
Relative Atomic Mass
49.954238157 ± 0.000000123 Da
G-Factor
0
Abundance
Radioactivity☢️ Radioactive
Half Life
283.21 ± 0.07 ms
Spin0
Quadrupole Moment
0
Discovery Year1952
Parity+

Decay ModeIntensity
β+ (β+ decay; β+ = ϵ + e+)100%

51Mn

Mass Number51
Neutron Number26
Relative Atomic Mass
50.94820877 ± 0.000000326 Da
G-Factor
1.43 ± 0.0016
Abundance
Radioactivity☢️ Radioactive
Half Life
45.81 ± 0.21 m
Spin5/2
Quadrupole Moment
0.41 ± 0.08
Discovery Year1938
Parity-

Decay ModeIntensity
β+ (β+ decay; β+ = ϵ + e+)100%

52Mn

Mass Number52
Neutron Number27
Relative Atomic Mass
51.94555909 ± 0.000000138 Da
G-Factor
0.51036666666667 ± 0.0002
Abundance
Radioactivity☢️ Radioactive
Half Life
5.591 ± 0.003 d
Spin6
Quadrupole Moment
0.5 ± 0.07
Discovery Year1938
Parity+

Decay ModeIntensity
β+ (β+ decay; β+ = ϵ + e+)100%

53Mn

Mass Number53
Neutron Number28
Relative Atomic Mass
52.941287497 ± 0.000000371 Da
G-Factor
1.438 ± 0.0014285714285714
Abundance
Radioactivity☢️ Radioactive
Half Life
3.7 ± 0.4 My
Spin7/2
Quadrupole Moment
0.17 ± 0.03
Discovery Year1955
Parity-

Decay ModeIntensity
ϵ (electron capture)100%

54Mn

Mass Number54
Neutron Number29
Relative Atomic Mass
53.940355772 ± 0.00000108 Da
G-Factor
1.099 ± 0.001
Abundance
Radioactivity☢️ Radioactive
Half Life
312.081 ± 0.032 d
Spin3
Quadrupole Moment
0.37 ± 0.03
Discovery Year1938
Parity+

Decay ModeIntensity
ϵ (electron capture)100%
β (β decay)0.93%
e+ (positron emission)1.28%

55Mn

Mass Number55
Neutron Number30
Relative Atomic Mass
54.93804304 ± 0.000000279 Da
G-Factor
Abundance
100
RadioactivityStable
Half LifeNot Radioactive ☢️
Spin5/2
Quadrupole Moment
0.33 ± 0.01
Discovery Year1923
Parity-

56Mn

Mass Number56
Neutron Number31
Relative Atomic Mass
55.938902816 ± 0.000000314 Da
G-Factor
1.08 ± 0.00066666666666667
Abundance
Radioactivity☢️ Radioactive
Half Life
2.5789 ± 0.0001 h
Spin3
Quadrupole Moment
0.24 ± 0.08
Discovery Year1934
Parity+

Decay ModeIntensity
β (β decay)100%

57Mn

Mass Number57
Neutron Number32
Relative Atomic Mass
56.938285944 ± 0.000001615 Da
G-Factor
1.3924 ± 0.0008
Abundance
Radioactivity☢️ Radioactive
Half Life
85.4 ± 1.8 s
Spin5/2
Quadrupole Moment
0.37 ± 0.03
Discovery Year1954
Parity-

Decay ModeIntensity
β (β decay)100%

58Mn

Mass Number58
Neutron Number33
Relative Atomic Mass
57.940066643 ± 0.0000029 Da
G-Factor
2.623 ± 0.002
Abundance
Radioactivity☢️ Radioactive
Half Life
3 ± 0.1 s
Spin1
Quadrupole Moment
0.03 ± 0.08
Discovery Year1961
Parity+

Decay ModeIntensity
β (β decay)100%

59Mn

Mass Number59
Neutron Number34
Relative Atomic Mass
58.940391111 ± 0.0000025 Da
G-Factor
1.3976 ± 0.0012
Abundance
Radioactivity☢️ Radioactive
Half Life
4.59 ± 0.05 s
Spin5/2
Quadrupole Moment
0.34 ± 0.03
Discovery Year1976
Parity-

Decay ModeIntensity
β (β decay)100%

60Mn

Mass Number60
Neutron Number35
Relative Atomic Mass
59.943136574 ± 0.0000025 Da
G-Factor
2.488 ± 0.007
Abundance
Radioactivity☢️ Radioactive
Half Life
280 ± 20 ms
Spin1
Quadrupole Moment
0.1 ± 0.2
Discovery Year1978
Parity+

Decay ModeIntensity
β (β decay)100%

61Mn

Mass Number61
Neutron Number36
Relative Atomic Mass
60.944452541 ± 0.0000025 Da
G-Factor
1.4132 ± 0.0008
Abundance
Radioactivity☢️ Radioactive
Half Life
709 ± 8 ms
Spin5/2
Quadrupole Moment
0.36 ± 0.03
Discovery Year1980
Parity-

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)

62Mn

Mass Number62
Neutron Number37
Relative Atomic Mass
61.947907384 ± 0.000007023 Da
G-Factor
2.384 ± 0.007
Abundance
Radioactivity☢️ Radioactive
Half Life
92 ± 13 ms
Spin1
Quadrupole Moment
0.1 ± 0.2
Discovery Year1983
Parity+

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)

63Mn

Mass Number63
Neutron Number38
Relative Atomic Mass
62.949664672 ± 0.000004 Da
G-Factor
1.3756 ± 0.0012
Abundance
Radioactivity☢️ Radioactive
Half Life
275 ± 4 ms
Spin5/2
Quadrupole Moment
0.48 ± 0.04
Discovery Year1985
Parity-

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)

64Mn

Mass Number64
Neutron Number39
Relative Atomic Mass
63.953849369 ± 0.0000038 Da
G-Factor
2.085 ± 0.003
Abundance
Radioactivity☢️ Radioactive
Half Life
88.8 ± 2.4 ms
Spin1
Quadrupole Moment
Discovery Year1985
Parity+

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)2.7%

65Mn

Mass Number65
Neutron Number40
Relative Atomic Mass
64.956019749 ± 0.000004 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
91.9 ± 0.7 ms
Spin5/2
Quadrupole Moment
Discovery Year1985
Parity-

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)7.9%

66Mn

Mass Number66
Neutron Number41
Relative Atomic Mass
65.960546833 ± 0.000012 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
63.8 ± 0.9 ms
Spin1
Quadrupole Moment
Discovery Year1992
Parity+

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)7.4%
2n (2-neutron emission)

67Mn

Mass Number67
Neutron Number42
Relative Atomic Mass
66.96395 ± 0.000215 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
46.7 ± 2.3 ms
Spin5/2
Quadrupole Moment
Discovery Year1997
Parity-

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)10%
2n (2-neutron emission)

68Mn

Mass Number68
Neutron Number43
Relative Atomic Mass
67.968953 ± 0.000322 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
33.7 ± 1.5 ms
Spin3
Quadrupole Moment
Discovery Year1995
Parity

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)18%
2n (2-neutron emission)

69Mn

Mass Number69
Neutron Number44
Relative Atomic Mass
68.972775 ± 0.000429 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
22.1 ± 1.6 ms
Spin5/2
Quadrupole Moment
Discovery Year1995
Parity-

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)40%
2n (2-neutron emission)

70Mn

Mass Number70
Neutron Number45
Relative Atomic Mass
69.978046 ± 0.000537 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
19.9 ± 1.7 ms
Spin4
Quadrupole Moment
Discovery Year2009
Parity

Decay ModeIntensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

71Mn

Mass Number71
Neutron Number46
Relative Atomic Mass
70.982158 ± 0.000537 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin5/2
Quadrupole Moment
Discovery Year2010
Parity-

Decay ModeIntensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

72Mn

Mass Number72
Neutron Number47
Relative Atomic Mass
71.988009 ± 0.000644 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin
Quadrupole Moment
Discovery Year2013
Parity

Decay ModeIntensity
β (β decay)
β n (β-delayed neutron emission)
2n (2-neutron emission)

73Mn

Mass Number73
Neutron Number48
Relative Atomic Mass
72.992807 ± 0.000644 Da
G-Factor
Abundance
Radioactivity☢️ Radioactive
Half Life
Spin5/2
Quadrupole Moment
Discovery Year2017
Parity-

Decay ModeIntensity
β (β decay)
Manganese electrolytic and 1cm3 cube

History

By the mid-18th century, Swedish chemist Carl Wilhelm Scheele had used pyrolusite to produce chlorine. Scheele and others were aware that pyrolusite contained a new element, but they were not able to isolate it. Johan Gottlieb Gahn was the first to isolate an impure sample of manganese metal in 1774, by reducing the dioxide with carbon. From the Latin word magnes, magnet, from magnetic properties of pyrolusite

DiscoverersJohann Gahn
Discovery LocationSweden
Discovery Year1774
Etymology (Name Origin)Latin: magnes (magnet); Italian: manganese.
PronunciationMAN-ge-nees (English)
Excess manganese, particularly inhalation of the powder, is toxic
Neanderthals may have used black manganese di oxide as a cosmetic 50,000 years ago

Uses

For over 2000 years, manganese dioxide has been used to make colorless glass. Manganese dioxide is used as the cathode material in zinc-carbon and alkaline batteries. Manganese also functions in the oxygen-evolving complex of photosynthetic plants. The dioxide is also used in the preparation of oxygen and chlorine and in drying black paints. Used in steel, batteries and ceramics. The steel in railroad tracks can contain as much as 1.2% manganese. It is crucial to the effectiveness of vitamin B1.

Sources

Most abundant ores are pyrolusite (MnO2), psilomelane [(Ba,H2O)2Mn5O10] and rhodochrosite (MnCO3). Pure metal produced by mixing MnO2 with powered Al and ignited in a furnace.

Abundance
Abundance in Earth's crust
950 mg/kg
Natural Abundance (Oceans)
0.0002 mg/L
Natural Abundance (Human Body)
0.00002 %
Natural Abundance (Meteor)
0.27 %
Natural Abundance (Sun)
0.001 %
Abundance in Universe
0.0008 %

Nuclear Screening Constants

1s0.6043
2p3.916
2s7.2062
3d14.4718
3p12.8908
3s11.9821
4s19.7168

Also Known As

  • Mn
  • element 25
  • 25Mn

Translations

  • Italianmanganese
  • Norwegian Bokmålmangan
  • GermanMangan
  • Russianмарганец
  • Frenchmanganèse
  • Dutchmangaan
  • Spanishmanganeso
  • Chinese (Traditional)
  • AfrikaansMangaan
  • Amharicማንጋኒዝ
  • AragoneseManganés
  • Arabicمنغنيز
  • AsturianManganesu
  • AzerbaijaniManqan
  • BelarusianМарганец
  • Bulgarianманган
  • Banglaম্যাঙ্গানিজ
  • BretonManganez
  • Bosnianmangan
  • Catalanmanganès
  • CorsicanManganese
  • Czechmangan
  • ChuvashМарганец
  • WelshManganîs
  • Danishmangan
  • Divehiމެންގަނީޒް
  • Greekμαγγάνιο
  • Esperantomangano
  • Estonianmangaan
  • Basquemanganeso
  • Persianمنگنز
  • Finnishmangaani
  • FriulianManganês
  • IrishMangainéis
  • Galicianmanganeso
  • ManxManganaish
  • Hakka Chinesemanganese
  • Hebrewמנגן
  • Hindiमैंगनीज़
  • Fiji HindiManganese
  • Croatianmangan
  • Haitian CreoleManganèz
  • Hungarianmangán
  • Armenianմանգան
  • Interlinguamanganese
  • Indonesianmangan
  • Idomangano
  • Icelandicmangan
  • Japaneseマンガン
  • Lojbanjinmrmanga
  • JavaneseMangan
  • Georgianმანგანუმი
  • KazakhМарганец
  • Kannadaಮ್ಯಾಂಗನೀಸ್
  • Korean망가니즈
  • KurdishMangan
  • KomiМарганец
  • Latinmanganum
  • LuxembourgishMangan
  • LigurianManganeise
  • Lithuanianmanganas
  • Latvianmangāns
  • MokshaМангани
  • Macedonianманган
  • Malayalamമാംഗനീസ്
  • Mongolianманган
  • Marathiमँगेनिझ
  • Western MariМарганец
  • MalayMangan
  • Low GermanMangan
  • Norwegian Nynorskmangan
  • OccitanManganès
  • Punjabiਮੈਂਗਨੀਜ਼
  • Polishmangan
  • Western Panjabiمینگانیز
  • Portuguesemanganês
  • QuechuaManganisu
  • Romanianmangan
  • Sicilianmanganisi
  • Serbo-CroatianMangan
  • SinhalaManganese
  • Slovakmangán
  • Slovenianmangan
  • AlbanianMangani
  • Serbianманган
  • Saterland FrisianMangan
  • Swedishmangan
  • SwahiliManganisi
  • Tamilமாங்கனீசு
  • Teluguమాంగనీస్
  • Thaiแมงกานีส
  • Turkishmangan
  • Uyghurمانگان
  • Ukrainianманган
  • UzbekMarganets
  • VepsMarganc
  • Vietnamesemangan
  • WarayManganeso
  • Yiddishמאנגאן
  • YorubaManganisi
  • Chinese
  • CebuanoManganeso
  • Central Kurdishمەنگەنیز
  • Northern FrisianMangan
  • TagalogMangganeso
  • Gujaratiમેંગેનિઝ
  • Odiaମାଙ୍ଗାନିଜ
  • PiedmonteseManganèis
  • TatarМарганец
  • ScotsManganese
  • SomaliManganiis
  • Literary Chinese
  • BashkirМарганец
  • Cantonese
  • Belarusian (Taraskievica orthography)манган
  • ErzyaМарганец
  • Newariम्याङ्यानिज
  • Chinese (China)
  • Chinese (Simplified)
  • Chinese (Hong Kong SAR China)
  • Chinese (Taiwan)
  • AromanianManganu
  • KyrgyzМарганец
  • SardinianManganesu
  • LimburgishMangaan
  • cdoMâing
  • FaroeseMangan
  • Portuguese (Brazil)manganês
  • Sanskritम्याङ्यानिज
  • Maltesemanganiż
  • LombardManganese
  • Nepaliम्याङगनिज
  • Min Nan ChineseManganese
  • azbمنگنز
  • SundaneseMangan
  • Bhojpuriमैंगनीज
  • Scottish GaelicMangaineis
  • Tibetanམེང་ལྕགས།
  • Lingua Franca Novamanganes
  • Wu Chinese
  • OsseticМарган
  • Burmeseမက်ဂနိစ်
  • oloManganum
  • kbpMaŋganɛzɩ
  • TajikМанган
  • Moroccan Arabicمنݣنيز
  • Egyptian Arabicمنغنيز
  • Pashtoمنگنيز
  • BikolMangganeso
  • lldManganeis
  • MalagasyManganezy
  • CornishManganes
  • BalineseMangan (datu)
  • KotavaManirtel
  • Northern Samimangána
  • Inari Samimangaan
  • Skolt Samimangaan
  • Paliम्याङ्यानिज
  • Urduمینگنیز
  • Korean (North Korea)망간
  • blkမဲန်ဂနီ့သ်