| Content-Type | image/png |
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| Content-Length | 9.31 kB |
| Size | 512x512 |
#95 Americium - rarity ZERO-KELVIN
| 1st ionization energy | 5.993 eV | 0.85% |
|---|---|---|
| appearance | Silvery-white metallic appearance | 2.54% |
| atomic mass | 243 u | 0.85% |
| atomic number | 95 | 0.85% |
| atomic radius | 244 picometers (van der Waals radius) | 1.69% |
| boiling point | 2880 K or 2607 °C or 4725 °F | 0.85% |
| cas number | 7440-35-9 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Inner transition metals | 23.73% |
| crystal structure | Double hexagonal close packed | 5.08% |
| density | 13.67 g/cm3 | 0.85% |
| electronegativity | 1.3 (Pauling scale) | 9.32% |
| electronic configuration | [Rn] 5f7 7s2 | 0.85% |
| electrons | 95 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 25, 8, 2 | 0.85% |
| main isotopes | 241Am and 243Am | 0.85% |
| melting point | 1449 K or 1176 °C or 2149 °F | 0.85% |
| neutrons | 148 | 1.69% |
| position | Group: actinides, Period: 7, Block: f | 10.17% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Am | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Glenn T. Seaborg, Albert Ghiorso, Leon O. Morgan, Ralph A. James (in 1944) | 0.85% |
Total Rarity Score: 1743.8
Rarity: #88/354