67
Ho
Holmium
Holmium
Holmium (Ho)
Lanthanides · Solid · Period 6 · Group 3
Element Properties
- Atomic Number
- 67
- Symbol
- Ho
- Atomic Mass
- 164.9303
- Category
- Lanthanides
- Standard State
- Solid
- Period
- 6
- Group
- 3
- Electronegativity
- 1.23
- Atomic Radius
- 216
- Ionization Energy
- 6.02
- Electron Affinity
- —
- Oxidation States
- +3
- Melting Point
- 1747 K (1473.85 °C)
- Boiling Point
- 2973 K (2699.85 °C)
- Density
- 8.8
- Electron Configuration
- [Xe]6s2 4f11
- Year Discovered
- 1878
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Frequently asked questions
What is the atomic number of Holmium?
The atomic number of Holmium is 67, which equals the number of protons in its nucleus.
What is the atomic mass of Holmium?
The atomic mass of Holmium is approximately 164.9303 u (one twelfth of the mass of a carbon-12 atom).
What is the electron configuration of Holmium?
The electron configuration of Holmium is [Xe]6s2 4f11.
Where is Holmium in the periodic table?
Holmium is located in period 6, group 3.
When was Holmium discovered?
Holmium was discovered in 1878.
Related elements
Same group
21
Sc
Scandium
44.956
39
Y
Yttrium
88.906
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.24