The Periodic Table/57 - Lanthanum (La)

Element Lanthanum (La, 57)

Here you can read more about the chemical element Lanthanum. Its shemical symbol is La and its atomic number is 57. The relative atomic mass of Lanthanum is 138.90547 u. The elemental classification of Lanthanum is Lanthanides, and it belongs to group 3 and period 6 in the Periodic Table of Elements.

The density of Lanthanum is 6146 kg/m3. And the mineral hardness of Lanthanum is 2.5 Mohs. The melting point of Lanthanum is 1193 Kelvin (920 ℃). The boiling point of Lanthanum is 3730 Kelvin (3457 ℃). Lanthanum was discovered in the year 1838 by Carl Gustaf Mosander.

To the right (or below if you are using a mobile device with a smaller screen) you will find the information given above for the element Lanthanum ordered in tabular form, which might be easier to read and use if you want to quantify it in some sort.

Data about element Lanthanum

Chemical symbol
Element classification
Atomic number
Relativ atomic mass
Atomic mass
138.90547 u
6146 kg/m3
Melting point
1193 K   (920 ℃)
Boiling point
3730 K   (3457 ℃)
Mineral hardness
2.5 Mohs
Discovered year
Discovered by
Carl Gustaf Mosander