Holmium
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| General Properties | ||||||||
|---|---|---|---|---|---|---|---|---|
| Atomic number | Atomic mass | Atomic radii | Electron Configuration | Density | Melting point | Boiling point | First discovered | Most common compound on Earth |
| 67 | 164.930amu | 226pm | [Xe] 4f11 6s2 | 8.80g/cm3 | 1472°C | 2700°C | 1878 | (Ce,La,Nd,Th)(PO4,SiO4) (Monazite Ore) |
| General Properties | |
|---|---|
| Atomic number | 67 |
| Atomic mass | 164.930amu |
| Atomic radii | 226pm |
| Electron Configuration | [Xe] 4f11 6s2 |
| Density | 8.80g/cm3 |
| Melting point | 1472°C |
| Boiling point | 2700°C |
| First discovered | 1878 |
| Most common compound on Earth | (Ce,La,Nd,Th)(PO4,SiO4) (Monazite Ore) |
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Description and uses
Holmium is the 67th element of the periodic table. It was discovered in 1878 by Marc Delafontaine and Louis Soret
after analysing yttrium oxide, which contains small amounts of certain lanthanides.
Holmium only has one naturally occurring isotope, with an atomic mass of 165. It is one of the monoisotopic elements.