Chemical element, symbol Mn and atomic number మూస:SHORTDESC:Chemical element, symbol Mn and atomic number
మాంగనీస్, 00Mn Pure manganese cube and oxidized manganese chips |
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| Pronunciation | (MANG-gə-neez) |
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| Appearance | silvery metallic |
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| - 54.938043±0.000002[1]
- 54.938±0.001 (abridged)[2]
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| Group | మూస:Infobox element/symbol-to-group/format |
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| Period | period 4 |
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| Block | d-block |
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| Electron configuration | [Ar] 3d5 4s2 |
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| Electrons per shell | 2, 8, 13, 2 |
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| Phase at STP | solid |
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| Melting point | 1519 K (1246 °C, 2275 °F) |
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| Boiling point | 2334 K (2061 °C, 3742 °F) |
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| Density (near r.t.) | 7.21 g/cm3 |
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| when liquid (at m.p.) | 5.95 g/cm3 |
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| Heat of fusion | 12.91 kJ/mol |
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| Heat of vaporization | 221 kJ/mol |
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| Molar heat capacity | 26.32 J/(mol·K) |
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Vapor pressure| P (Pa) | 1 | 10 | 100 | 1 k | 10 k | 100 k |
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| at T (K) | 1228 | 1347 | 1493 | 1691 | 1955 | 2333 |
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| Oxidation states | −3, −1, 0, +1, +2, +3, +4, +5, +6, +7 (depending on the oxidation state, an acidic, basic, or amphoteric oxide) |
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| Electronegativity | Pauling scale: 1.55 |
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| Ionization energies | |
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| Atomic radius | empirical: 127 pm |
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| Covalent radius | 139±5 (low spin), 161±8 (high spin) pm |
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 Spectral lines of మాంగనీస్ |
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| Natural occurrence | primordial |
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| Crystal structure | body-centered cubic (bcc) |
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| Speed of sound thin rod | 5150 m/s (at 20 °C) |
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| Thermal expansion | 21.7 µm/(m⋅K) (at 25 °C) |
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| Thermal conductivity | 7.81 W/(m⋅K) |
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| Electrical resistivity | 1.44 µ Ω⋅m (at 20 °C) |
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| Magnetic ordering | paramagnetic |
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| Young's modulus | 198 GPa |
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| Bulk modulus | 120 GPa |
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| Mohs hardness | 6.0 |
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| Brinell hardness | 196 MPa |
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| CAS Number | 7439-96-5 |
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| Discovery | Torbern Olof Bergman (1770) |
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| First isolation | Johann Gottlieb Gahn (1774) |
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| Template:infobox మాంగనీస్ isotopes does not exist |
 Category: మాంగనీస్
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References
