We elaborate the uses of Lanthanum and atomic properties with characteristics. Lanthanum is a silvery-white chemical element with atomic number 57. Its symbol is La and it belongs to the group of lanthanides and its normal state in nature is solid. Lanthanum is located at position 57 on the periodic table.
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On this page you can discover the chemical properties of lanthanum and information about lanthanum and other elements of the periodic table such as yttrium, actinium, uranium or laurentium. You will also learn what lanthanum is for and you will know what its uses through its properties associated with lanthanum such as its atomic number or the usual state in which lanthanum can be found.
You will be able to see qualities of lanthanum such as its melting and boiling point, its magnetic properties or what its chemical symbol is. Also, here you will find information about its atomic properties such as the distribution of electrons in lanthanum atoms and other properties.
For some elements, part of this information is unknown. In these cases we show the properties attributed to them.
Lanthanum properties
Lanthanum is part of the group of lanthanides. Lanthanides are also called rare earths since they are commonly presented as oxides. Together with the actinides, the lanthanides form the internal transition elements.
The state of lanthanum in its natural form is solid. Lanthanum is a silvery-white chemical element and belongs to the group of lanthanides. The atomic number of lanthanum is 57. The chemical symbol for lanthanum is La. Lanthanum’s melting point is 1,193 degrees Kelvin or 920.85 degrees Celsius or degrees Celsius. The boiling point of lanthanum is 3730 degrees Kelvin or 3457.85 degrees Celsius or degrees Celsius.
Atomic properties of lanthanum
The atomic mass of an element is determined by the total mass of neutrons and protons that can be found in a single atom belonging to this element. Regarding the position to find lanthanum within the periodic table of elements, lanthanum is in group 3 and period 6. Lanthanum has an atomic mass of 138.9055 u.
The electron configuration of lanthanum is [Xe] 5d16s2. The electronic configuration of the elements determines the way in which the electrons are structured in the atoms of an element. The mean radius of lanthanum is 195 pm and its covalent radius is 169 pm. Lanthanum has a total of 57 electrons whose distribution is as follows: In the first layer it has 2 electrons, in the second it has 8 electrons, in its third layer it has 18 electrons, in the fourth, 18 electrons, in the fifth layer it has 9 electrons and in the sixth, 2 electrons.
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Lanthanum characteristics
Below you can see a table that shows the main characteristics of lanthanum.
| Lanthanum | ||
|---|---|---|
| Chemical symbol | The | |
| Atomic number | 57 | |
| Group | 3 | |
| Period | 6 | |
| Appearance | silvery white | |
| Block | F | |
| Density | 6146 kg / m3 | |
| Atomic mass | 138.9055 u | |
| Medium radius | 195 pm | |
| Covalent radius | 169 pm | |
| Electronic configuration | [Xe] 5d16s2 | |
| Electrons per shell | 2, 8, 18, 18, 9, 2 | |
| Oxidation states | 3 | |
| Oxide | strong base | |
| Crystal structure | hexagonal | |
| State | solid | |
| Melting point | 1193K | |
| Boiling point | 3730K | |
| Heat of fusion | 6.2 kJ / mol | |
| Vapor pressure | 1.33 × 10-7Pa at 1193 K | |
| Electronegativity | 1.1 | |
| Specific heat | 190 J / (Kkg) | |
| Electric conductivity | 1.26106S / m | |
| Thermal conductivity | 13.5 W / (K m) | |
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