| Content-Type | image/gif |
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| Content-Length | 794.14 kB |
| Size | 512x512 |
#98 Californium - rarity SPINNIN'IN
| 1st ionization energy | 6.30 eV | 0.85% |
|---|---|---|
| appearance | Silvery | 1.69% |
| atomic mass | 251 u | 0.85% |
| atomic number | 98 | 0.85% |
| atomic radius | 245 picometers (van der Waals radius) | 2.54% |
| boiling point | 1743 K or 1470 °C or 2678 °F | 0.85% |
| cas number | 7440-71-3 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Inner transition metals | 23.73% |
| crystal structure | DHCP (Double hexagonal close packed) | 1.69% |
| density | 15.1 g/cm3 | 0.85% |
| electronegativity | 1.3 (Pauling scale) | 9.32% |
| electronic configuration | [Rn] 5f10 7s2 | 0.85% |
| electrons | 98 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 28, 8, 2 | 0.85% |
| main isotopes | - | 7.63% |
| melting point | 1173 K or 900 °C or 1652 °F | 0.85% |
| neutrons | 153 | 1.69% |
| position | Group: actinides, Period: 7, Block: f | 10.17% |
| rarity | SPINNIN'IN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Cf | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Glenn T. Seaborg, Stanley Thompson, Albert Ghiorso and Kenneth Street (in 1950) | 0.85% |
Total Rarity Score: 1678.25
Rarity: #91/354