Manganese, 25Mn
A rough fragment of lustrous silvery metal
Manganese
Pípè /ˈmæŋɡənz/ (MANG-gə-neez)
Ìhànsójúsilvery metallic
Ìwúwo átọ̀mù Ar, std(Mn)54.938043(2)[1]
Manganese ní orí tábìlì àyè
Hydrogen Helium
Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon
Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon
Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton
Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon
Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon
Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson
-

Mn

Tc
chromiummanganeseiron
Nọ́mbà átọ̀mù (Z)25
Ẹgbẹ́group 7
Àyèàyè 4
Àdìpọ̀Àdìpọ̀-d
Ẹ̀ka ẹ́límẹ́ntì  Transition metal
Ìtò ẹ̀lẹ́ktrọ́nù[Ar] 3d5 4s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan2, 8, 13, 2
Àwọn ohun ìní ara
Ìfarahàn at STPsolid
Ìgbà ìyọ́1519 K ​(1246 °C, ​2275 °F)
Ígbà ìhó2334 K ​(2061 °C, ​3742 °F)
Kíki (near r.t.)7.21 g/cm3
when liquid (at m.p.)5.95 g/cm3
Heat of fusion12.91 kJ/mol
Heat of 221 kJ/mol
Molar heat capacity26.32 J/(mol·K)
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1228 1347 1493 1691 1955 2333
Atomic properties
Oxidation states−3, −2, −1, 0, +1, +2, +3, +4, +5, +6, +7 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
ElectronegativityPauling scale: 1.55
energies
Atomic radiusempirical: 127 pm
Covalent radius139±5 (low spin), 161±8 (high spin) pm
Color lines in a spectral range
Spectral lines of manganese
Other properties
Natural occurrenceprimordial
Crystal structure ​(bcc)
Body-centered cubic crystal structure for manganese
Speed of sound thin rod5150 m/s (at 20 °C)
Thermal expansion21.7 µm/(m·K) (at 25 °C)
Thermal conductivity7.81 W/(m·K)
Electrical resistivity1.44 µ Ω·m (at 20 °C)
Magnetic orderingparamagnetic
Young's modulus198 GPa
Bulk modulus120 GPa
Mohs hardness6.0
Brinell hardness196 MPa
CAS Number7439-96-5
Main isotopes of manganese
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct
52Mn syn 5.591 d ε - 52Cr
β+ 0.575 52Cr
γ 0.7, 0.9, 1.4 -
53Mn trace 3.74 ×106 y ε - 53Cr
54Mn syn 312.3 d ε 1.377 54Cr
γ 0.834 -
55Mn 100% 55Mn is stable with 30 neutrons
Àdàkọ:Category-inline
| references

ItokasiÀtúnṣe

  1. Meija, Juris; Coplen, Tyler B.; Berglund, Michael; Brand, Willi A.; De Bièvre, Paul; Gröning, Manfred; Holden, Norman E.; Irrgeher, Johanna et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure and Applied Chemistry 88 (3): 265–91. doi:10.1515/pac-2015-0305.