Difference between revisions of "Americium"
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Latest revision as of 19:04, 4 September 2007
| Americium | |
|---|---|
| Am | |
| In situ availability: | |
| Necessity: | |
| Atomic number: | 95 |
| Atomic mass: | [243] |
| group: | 19 |
| period: | N/A |
| normal phase: | Solid |
| series: | Actinide |
| density: | 12 g/cm3 |
| melting point: | 1449K, 1176°C, 2149°F |
| boiling point: | 2880K, 2607°C, 4725°F |
| Sm ← Eu → Gd | |
| Pu ← Am → Cm | |
| N/A ← N/A → N/A | |
| Atomic radius (pm): | 175 |
| Bohr radius (pm): | |
| Covalent radius (pm): | |
| Van der Waals radius (pm): | |
| ionic radius (pm): | (+3) 98 |
| 1st ion potential (eV): | 5.99 |
| Electron Configuration | |
| 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 5f7 6s2 6p6 7s2 | |
| Electrons Per Shell | |
| 2, 8, 18, 32, 25, 8, 2 | |
| Electronegativity: | |
| Electron Affinity: | - |
| Oxidation states: | 6, 5, 4, 3 |
| Magnetism: | ? |
| Crystal structure: | Hexagonal |
Americium is a Actinide metal.
It has a Hexagonal crystalline structure.
It does not have any isotopes considered to be natural. Its longest-lived known isotope has an atomic number of 243.
This element has no stable isotopes.
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