 | Lanthanum | Atomic Number: 57 |
- Overview
Property Value Units 138.9055
6.146
- Thermal Properties
Thermal Properties
Property Value Units 920°C
3469°C
The critical pressure has not been determined for Lanthanum
The critical temperature has not been determined for Lanthanum
6.2 kJ/mol
400 kJ/mol
195 J/kg·K
13 W/m·K
- Electon Configuration
[Xe] 5d1 6s2
K L M N O P Q 2 8 18 18 9 2 0 Level S Orbital P Orbital D Orbital F Orbital Level 1 Level 2 - History
Year Discovered
1839
- Isotopes
Isotope Common Name Symbol Mass Status Abundance Half-life Decay mode Decay Energy Nuclear Spin Magnetic Moment 57
La
138
Lanthanum La 138 Stable 0.09 - - - - - 57
La
139
Lanthanum La 139 Stable 99.91 - - - - - Isotopic mass data for stable isotopes is from:
G. Audi, A.H. Wapstra in Nuclear Physics A, 1993, 565, 1-65
and
G. Audi, A.H.Wapstra in Nuclear Physics A, 1995, 595 409-480.Natural abundance data is from:
K.J.R. Rosman, P.D.P. Taylor in Pure Appplied Chemistry, 1999, 71, 1593-1607.- Occurance
In the Universe 0.0000002% In the Sun 0.0000002% In Meteorites 0.000028% In the Earth's Crust 0.0034% In Seawater 3.4E-10% In the Human Body 0% - Models
Pictures, videos and 3D models of the element
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