Fm - Fermium
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- Atomic Number: 100
- Atomic Weight (Mass): 257.00000
- Melting Point: 1527 °C
- Boiling Point: 0 °C
- Orbital Class: 5f
- Orbital: [Rn] 5f12 7s2
- Class: Actinides
- Electronegativity: 1.3
- Density: unknown
- Van der Waals Radius: .200 nm
- Ionic Radius: unknown
- First Ionization Energy: 627.16 kJ mol-1
- Second Ionization Energy: unknown
- Third Ionization Energy: unknown
- Heat of Fusion: unknown
- Heat of Vaporization: unknown
- Heat of Atomization: 141 kJ mol-1
- Electrical Conductivity: unknown
- Thermal Conductivity: unknown
- Related To: B, Al, Sc, Co, Ni, Ga, Y, Ag, In, La, Nd, Pm, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, Au, Tl, Ac, Cm, Cf, Es, Fm, Md, No, Lr,
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Valences |
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III |
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V |
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VII |
VIII |
1+ |
2+ |
3+ |
4+ |
5+ |
6+ |
7+ |
8+ |
3- |
2- |
1- |
0 |
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Fm |
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Fermium is a Block F, Group 3, Period 7 element. The electronic configuration is [Rn] 5f12 7s2. In its elemental form fermium's CAS number is 7440-72-4. The fermium atoms Van der Waals radius is 200.pm.
Fermium was discovered by Albert Ghiorso in 1953. Named in honour of Enrico Fermi.
French: Fermium, German: Fermium, Italian: fermio, Portuguese: fermio, Spanish: fermio, Swedish: Fermium
This element can be purchased in a variety of forms including as metal, compounds, ultra high purity, nanoparticles, and isotopes at www.americanelements.com
Reproduced With Permission: www.americanelements.com
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Click Here For More Information About Fermium: Wikipedia.org
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