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(Àtúnjúwe láti Manganese)
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| Manganese
|
25Mn
|
|
|
| Ìhànsójú
|
silvery metallic
|
| Àwọn ìdámọ́ wíwọ́pọ̀
|
| Orúkọ, àmì-ìdámọ́, nọ́mbà
|
manganese, Mn, 25
|
| Ẹ̀ka ẹ́límẹ̀nti
|
transition metal
|
| Ẹgbẹ́, àsìkò, àdìpò
|
7, 4, d
|
| Ìwúwo átọ́mù
|
54.938045(5)
|
| Ìtòléra ẹ̀lẹ́ktrónì
|
[Ar] 4s2 3d5
2, 8, 13, 2
|
| Physical properties
|
| Phase
|
solid
|
| Density (near r.t.)
|
7.21 g·cm−3
|
| Liquid density at m.p.
|
5.95 g·cm−3
|
| Melting point
|
1519 K, 1246 °C, 2275 °F
|
| Boiling point
|
2334 K, 2061 °C, 3742 °F
|
| Heat of fusion
|
12.91 kJ·mol−1
|
| Heat of vaporization
|
221 kJ·mol−1
|
| Molar heat capacity
|
26.32 J·mol−1·K−1
|
| Vapor 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
|
1.55 (Pauling scale)
|
Ionization energies
(more)
|
1st: 717.3 kJ·mol−1
|
| 2nd: 1509.0 kJ·mol−1
|
| 3rd: 3248 kJ·mol−1
|
| Atomic radius
|
127 pm
|
| Covalent radius
|
139±5 (low spin), 161±8 (high spin) pm
|
| Miscellanea
|
| Crystal structure
|
body-centered cubic
|
| Magnetic ordering
|
paramagnetic
|
| Electrical resistivity
|
(20 °C) 1.44 µΩ·m
|
| Thermal conductivity
|
7.81 W·m−1·K−1
|
| Thermal expansion
|
(25 °C) 21.7 µm·m−1·K−1
|
| Speed of sound (thin rod)
|
(20 °C) 5150 m·s−1
|
| Young's modulus
|
198 GPa
|
| Bulk modulus
|
120 GPa
|
| Mohs hardness
|
6.0
|
| Brinell hardness
|
196 MPa
|
| CAS registry number
|
7439-96-5
|
| Àwọn ísótòpù dídúró jùlọ
|
| Main article: Àwọn ísótòpù manganese
|
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| · r
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