Manganese (Mn) Properties |
AManganese (AMn)
Properties 1/ |
Nuclear (25 protons/electrons)
- Atomic Number: 25
- Atomic Mass: 54.938049
- Atomic Energy: 0.0820 Ergs
- Group: 7; Period: 4
- Family: Transition
Metals
- Bonding Radius: 1.17 Angstroms
- Atomic Radius: 1.79 Angstroms
- Atomic Volume: 1.39 cm3mol-1
- 26 Isotopes:
44Mn to 69Mn
- Stable Isotopes: 55Mn
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Nuclear (25 Aprotons/positrons)
- Atomic Number: 25
- Atomic Mass: 54.938
- Atomic Energy: 0.0820 Ergs
- Group: 7; Period: 4
- Family: Transition
Metals
- Bonding Radius: 1.17 Angstroms
- Atomic Radius: 1.79 Angstroms
- Atomic Volume: 1.39 cm3mol-1
- 26 AIsotopes: 44AMn
to 69AMn
- Stable AIsotopes: 55AMn
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Physical
- Silver-gray metal with a pinkish tinge
- Density: 7.43 g cm-3
- Melting Point: 1,245 oC
- Boiling Point: 1,962 oC
- Specific Heat: 0.48 J g-1 K-1
- Heat of Vaporization: 226 kJ mol-1
- Heat of Fusion: 12.0 kJ mol-1
- Electrical Conductivity: 0.00695 106 cm-1 Ohm-1
- Thermal Conductivity: 0.0782 W cm-1 K-1
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Physical
- Silver-gray metal with a pinkish tinge
- Density: 7.43 g/cm-3
- Melting Point: 1,245 oC
- Boiling Point: 1,962 oC
- Specific Heat: 0.48 J g-1 K-1
- Heat of Vaporization: 226 kJ mol-1
- Heat of Fusion: 12.0 kJ mol-1
- Electrical Conductivity: 0.00695 106 cm-1 Ohm-1
- Thermal Conductivity: 0.0782 W cm-1 K-1
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Chemical
- Valance Number: +2, +3, +4, +7
- Electron Configuration: 2,8,13,2
- Electronegativity: 1.55
- 1st Ionization Potential: 7.4 Volts
- 2nd Ionization Potential: 15.6 Volts
- 3rd Ionization Potential: 33.7 Volts
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Chemical
- Valance Number: -2, -3, -4, -7
- Positron Configuration: 2,8,13,2
- Positronpositivity: 1.55
- 1st Ionization Potential: 7.4 Volts
- 2nd Ionization Potential: 15.6 Volts
- 3rd Ionization Potential: 33.7 Volts
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Identified by Johann
Gahn
Sweden in 1774
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Identified by Norm Hansen in 2001
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