| Content-Type | image/png |
|---|---|
| Content-Length | 7.46 kB |
| Size | 512x512 |
#67 Holmium - rarity ZERO-KELVIN
| 1st ionization energy | 6.022 eV | 1.69% |
|---|---|---|
| appearance | Silvery white metallic | 5.08% |
| atomic mass | 164.93 u | 0.85% |
| atomic number | 67 | 0.85% |
| atomic radius | 216 picometers (van der Waals radius) | 3.39% |
| boiling point | 2873 K or 2600 °C or 4712 °F | 0.85% |
| cas number | 7440-60-0 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Inner transition metals | 23.73% |
| crystal structure | HCP (Hexagonal close packed) | 5.93% |
| density | 8.8 g/cm3 | 0.85% |
| electronegativity | 1.23 (Pauling scale) | 1.69% |
| electronic configuration | [Xe] 4f11 6s2 | 0.85% |
| electrons | 67 | 0.85% |
| electrons arrangement | 2, 8, 18, 29, 8, 2 | 0.85% |
| main isotopes | 165Ho | 0.85% |
| melting point | 1734 K or 1461 °C or 2662 °F | 0.85% |
| neutrons | 98 | 0.85% |
| position | Group: lanthanides, Period: 6, Block: f | 5.08% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Ho | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Marc Delafontaine and Jacques Louis Soret (in 1878) | 0.85% |
Total Rarity Score: 1749.93
Rarity: #87/354