Lanthanum
(Redirected from La)
Lanthanum | |
---|---|
La | |
In situ availability: | |
Necessity: | |
Atomic number: | 57 |
Atomic mass: | 138.9055 |
group: | 19 |
period: | N/A |
normal phase: | Solid |
series: | Lanthanide |
density: | 6.162 g/cm3 |
melting point: | 1193K, 920°C, 1688°F |
boiling point: | 3737K, 3464°C, 6267°F |
Sr ← Y → Zr | |
Ba ← La → Ce | |
Ra ← Ac → Th | |
Atomic radius (pm): | 195 |
Bohr radius (pm): | |
Covalent radius (pm): | 169 |
Van der Waals radius (pm): | |
ionic radius (pm): | (+3) 116 |
1st ion potential (eV): | 5.77 |
Electron Configuration | |
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 5d1 6s2 | |
Electrons Per Shell | |
2, 8, 18, 18, 9, 2 | |
Electronegativity: | 1.1 |
Electron Affinity: | 0.5 |
Oxidation states: | 3 |
Magnetism: | ? |
Crystal structure: | Hexagonal |
Lanthanum is a Lanthanide metal.
It has a Hexagonal crystalline structure.
This element has a stable isotope of 139
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