Manganese,  25Mn
A rough fragment of lustrous silvery metal
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକmanganese, Mn
Appearancesilvery metallic
ଉଚ୍ଚାରଣ/ˈmæŋɡənz/ MANG-gə-neez
Manganese in the periodic table
Hydrogen (other non-metal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (other non-metal)
Nitrogen (other non-metal)
Oxygen (other non-metal)
Fluorine (halogen)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (other non-metal)
Sulfur (other non-metal)
Chlorine (halogen)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (other non-metal)
Bromine (halogen)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (halogen)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanoid)
Cerium (lanthanoid)
Praseodymium (lanthanoid)
Neodymium (lanthanoid)
Promethium (lanthanoid)
Samarium (lanthanoid)
Europium (lanthanoid)
Gadolinium (lanthanoid)
Terbium (lanthanoid)
Dysprosium (lanthanoid)
Holmium (lanthanoid)
Erbium (lanthanoid)
Thulium (lanthanoid)
Ytterbium (lanthanoid)
Lutetium (lanthanoid)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (halogen)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinoid)
Thorium (actinoid)
Protactinium (actinoid)
Uranium (actinoid)
Neptunium (actinoid)
Plutonium (actinoid)
Americium (actinoid)
Curium (actinoid)
Berkelium (actinoid)
Californium (actinoid)
Einsteinium (actinoid)
Fermium (actinoid)
Mendelevium (actinoid)
Nobelium (actinoid)
Lawrencium (actinoid)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (unknown chemical properties)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
-

Mn

Tc
chromiummanganeseiron
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)25
ଶ୍ରେଣୀ, ବ୍ଳକgroup 7, d-block
ପର୍ଯ୍ୟାୟperiod 4
ମୌଳିକ ପ୍ରକାର  transition metal
ମାନକ ପରମାଣବିକ ଓଜନ (±) (Ar)54.938045(5)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ[Ar] 4s2 3d5
per shell
2, 8, 13, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥାsolid
ଗଳନାଙ୍କ1519 K ​(1246 °C, ​2275 °F)
ସ୍ଫୁଟନାଙ୍କ2334 K ​(2061 °C, ​3742 °F)
Density 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 states7, 6, 5, 4, 3, 2, 1, -1, -2, -3 ​oxides: acidic, basic or amphoteric
depending on the oxidation state
ElectronegativityPauling scale: 1.55
energies
(more)
Atomic radiusempirical: 127 pm
Covalent radius139±5 (low spin), 161±8 (high spin) pm
Miscellanea
Crystal structurebody-centered cubic (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
ଇତିହାସ
ଆବିଷ୍କାରTorbern Olof Bergman (1770)
First isolationJohann Gottlieb Gahn (1774)
Most stable isotopes of manganese
iso NA half-life DM DE (MeV) DP
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
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References