ମାଙ୍ଗାନିଜ

Manganese,  ₂₅Mn

ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ	manganese, Mn
Appearance	silvery metallic
ଉଚ୍ଚାରଣ	/ˈmæŋɡəniːz/ MANG-gə-neez
Manganese in the periodic table
- ↑ Mn ↓ Tc chromium ← manganese → iron
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)	25
ଶ୍ରେଣୀ, ବ୍ଳକ	group 7, d-block
ପର୍ଯ୍ୟାୟ	period 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
ଅବସ୍ଥା	solid
ଗଳନାଙ୍କ	1519 K ​(1246 °C, ​2275 °F)
ସ୍ଫୁଟନାଙ୍କ	2334 K ​(2061 °C, ​3742 °F)
Density near r.t.	7.21 g/cm3
when liquid, at m.p.	5.95 g/cm3
Heat of fusion	12.91 kJ/mol
Heat of	221 kJ/mol
Molar heat capacity	26.32 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	7, 6, 5, 4, 3, 2, 1, -1, -2, -3 ​oxides: acidic, basic or amphoteric depending on the oxidation state
Electronegativity	Pauling scale: 1.55
energies	(more)
Atomic radius	empirical: 127 pm
Covalent radius	139±5 (low spin), 161±8 (high spin) pm
Miscellanea
Crystal structure	​body-centered cubic (bcc)
Speed of sound thin rod	5150 m/s (at 20 °C)
Thermal expansion	21.7 µm/(m·K) (at 25 °C)
Thermal conductivity	7.81 W/(m·K)
Electrical resistivity	1.44 µ Ω·m (at 20 °C)
Magnetic ordering	paramagnetic
Young's modulus	198 GPa
Bulk modulus	120 GPa
Mohs hardness	6.0
Brinell hardness	196 MPa
CAS Number	7439-96-5
ଇତିହାସ
ଆବିଷ୍କାର	Torbern Olof Bergman (1770)
First isolation	Johann 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

ମାଙ୍ଗାନିଜ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Mn ଓ ପରମାଣୁ କ୍ରମାଙ୍କ ୨୫ ।

ବାହାର ଲିଙ୍କ

• National Pollutant Inventory – Manganese and compounds Fact Sheet
• International Manganese Institute
• Neurotoxicity of inhaled manganese: Public health danger in the shower?
• NIOSH Manganese Topic Page
• Link Found Between Parkinson's Disease Genes And Manganese Poisoning
• Manganese at The Periodic Table of Videos (University of Nottingham)
• Manganex Archived 2012-11-10 at the Wayback Machine. – Institute of Occupational Medicine's Manganese Exposure Database
• Development of a Standardised Method for Measuring Manganese Exposure Archived 2017-04-24 at the Wayback Machine. by A Sánchez Jiménez and others. Institute of Occupational Medicine Research Report TM/10/04. (This study compares the concentrations of inhalable and respirable Manganese collected with three airborne samples: the CIS (Conical Inhalable Sampler), IOM ( the Institute of Occupational Medicine) and the Higgins Dewell cyclone.)