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Lanthanum
(La)
1
1
2
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2
8
18
18
9
2
Animation
La
Category
Lanthanoid
Series
lanthanide
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Relative atomic mass
138.90547
Density
6.15
Melting point (°C)
920
Boiling point (°C)
3455
Electronegativity (Pauling)
1.1
Discovery year
1838
Discovered by
Carl Gustaf Mosander
Electrons: 57
Protons: 57
Neutrons: 82
Wikipedia
created by @lukaswyss
Lanthanum (La) – Element 57
