Thulium
(Redirected from Tm)
| Thulium | |
|---|---|
| Tm | |
| In situ availability: | |
| Necessity: | |
| Atomic number: | 69 |
| Atomic mass: | 168.93421 |
| group: | 19 |
| period: | N/A |
| normal phase: | Solid |
| series: | Lanthanide |
| density: | 9.32 g/cm3 |
| melting point: | 1818K, 1545°C, 2813°F |
| boiling point: | 2223K, 1950°C, 3542°F |
| Sr ← Y → Zr | |
| Er ← Tm → Yb | |
| Fm ← Md → No | |
| Atomic radius (pm): | 175 |
| Bohr radius (pm): | 222 |
| Covalent radius (pm): | |
| Van der Waals radius (pm): | |
| ionic radius (pm): | (+3)109 |
| 1st ion potential (eV): | 6.18 |
| Electron Configuration | |
| 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f13 5s2 5p6 6s2 | |
| Electrons Per Shell | |
| 2, 8, 18, 31, 8, 2 | |
| Electronegativity: | 1.25 |
| Electron Affinity: | - |
| Oxidation states: | 3, 2 |
| Magnetism: | ? |
| Crystal structure: | Hexagonal |
Thulium is a Lanthanide metal.
It has a Hexagonal crystalline structure.
This element has a stable isotope of 169
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