| Content-Type | image/png |
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| Content-Length | 8.10 kB |
| Size | 512x512 |
#75 Rhenium - rarity ZERO-KELVIN
| 1st ionization energy | 7.88 eV | 0.85% |
|---|---|---|
| appearance | Silvery gray luster | 0.85% |
| atomic mass | 186.21 u | 0.85% |
| atomic number | 75 | 0.85% |
| atomic radius | 217 picometers (van der Waals radius) | 2.54% |
| boiling point | 5903 K or 5630 °C or 10170 °F | 0.85% |
| cas number | 7440-15-5 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Transition metals | 25.42% |
| crystal structure | HCP (Hexagonal close packed) | 5.93% |
| density | 21.02 g/cm3 | 0.85% |
| electronegativity | 1.9 (Pauling scale) | 3.39% |
| electronic configuration | [Xe] 4f14 5d5 6s2 | 0.85% |
| electrons | 75 | 0.85% |
| electrons arrangement | 2, 8, 18, 32, 13, 2 | 0.85% |
| main isotopes | 187Re | 0.85% |
| melting point | 3459 K or 3186 °C or 5767 °F | 0.85% |
| neutrons | 111 | 0.85% |
| position | Group: 7, Period: 6, Block: d | 0.85% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Re | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Otto Berg, Walter Noddack, Ida Noddack (in 1925) | 0.85% |
Total Rarity Score: 1985.65
Rarity: #47/354