Lát'ọwọ́ Wikipedia, ìwé ìmọ̀ ọ̀fẹ́
(Àtúnjúwe láti Manganese)
| 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 |
