holmium — Ho
The chemical element holmium is an element of type Metal lanthanides with the symbol Ho. It has an atomic mass of 164.93033 u and an electronic configuration of [Xe] 4f11 6s2.
Synthétique
Radioactif
Liquide
Gaz
2720°
8
18
29
8
2
- Atomic number
- 67
- Atomic mass
- 164.93033
- Symbol
- Ho
- Melting point
- 1470
- Boiling point
- 2720
- Density
- 8.795
- Period
- 6
- Group
- 0
- Discovery
- 1878 Delafontaine and Soret
- Abundance
- 1.3
- Radius
- 2.5
- Electronegativity
- 1.23
- Ionization
- 6.0215
- Isotope
- 29
- Electronic configuration
- [Xe] 4f11 6s2
- Oxidation state
- 3
- Electron
- 2,8,18,29,8,2
Minerals containing holmium
| first name | Hardness | Density | Chemical formula |
|---|---|---|---|
| Chukhrovite-(Nd) | — | 2.42 | Ca3NdAl2SO4F13·12H2O |
| Decrespignyite-(Y) | — | 3.64 | Y4Cu(CO3)4Cl(OH)5·2H2O |
| Hingganite-(Y) | — | 0.00 | BeY(SiO4)(OH) |
| Iwashiroite-(Y) | — | 7.10 | YTaO4 |
| Moskvinite-(Y) | — | 2.91 | Na2KYSi6O15 |
| Samarskite-(Yb) | — | 7.03 | YbNbO4 |