| Content-Type | image/png |
|---|---|
| Content-Length | 6.42 kB |
| Size | 512x512 |
#40 Zirconium - rarity ZERO-KELVIN
| 1st ionization energy | 6.634 eV | 0.85% |
|---|---|---|
| appearance | Silvery white | 6.78% |
| atomic mass | 91.224 u | 0.85% |
| atomic number | 40 | 0.85% |
| atomic radius | 186 picometers (van der Waals radius) | 0.85% |
| boiling point | 4650 K or 4377 °C or 7911 °F | 0.85% |
| cas number | 7440-67-7 | 0.85% |
| cas number of (cl2) | - | 99.15% |
| category | Transition metals | 25.42% |
| crystal structure | HCP (Hexagonal close packing) | 6.78% |
| density | 6.511 g/cm3 | 0.85% |
| electronegativity | 1.33 (Pauling scale) | 0.85% |
| electronic configuration | [Kr] 4d2 5s2 | 0.85% |
| electrons | 40 | 0.85% |
| electrons arrangement | 2, 8, 18, 10, 2 | 0.85% |
| main isotopes | 90Zr | 0.85% |
| melting point | 2128 K or 1855 °C or 3371 °F | 0.85% |
| neutrons | 51 | 0.85% |
| position | Group: 4, Period: 5, Block: d | 0.85% |
| rarity | ZERO-KELVIN | 33.33% |
| state | Solid | 72.88% |
| sublimation point | - | 99.15% |
| symbol | Zr | 0.85% |
| valence electrons | - | 61.02% |
| who discovered | Martin Heinrich Klaproth in 1789 | 0.85% |
Total Rarity Score: 2047.46
Rarity: #32/354