
Periodic Table | Thorium Truss Element Symbol | Th | | Atomic Number | 90 | Relative Atomic Mass 12C = 12.0000 | 232.0381 1.40(1) x 1010 year | | Significant Atomic Mass | 231 Neutrons 141 | | Isotope | 230 230.0331 7.54(3) x 104 year | | Atomic Radius pm | 180 | First Ionisation Energy kJ mol -1 | 587 | | Electronegativity | 1.3 | | Density kg m -3 | 11720 [293 K] | | Molar Volume cm 3 | 19.80 | Thermal Conductivity W m -1 K -1 | 54.0 [300 K] | | Melting Point K | 2023 | | Boiling Point K | ca. 5060 | | Number of Isotopes | 25 | | Inner + outer Shells | | | Inner + outer Orbitals | | | | ??? | Algorythm of Software |  |  | | | | Distribution of electrons | | | s | p | d | f | | 1 | 2 | | | | | 2 | 2 | 6 | | | | 3 | 2 | 6 | 10 | | | 4 | 2 | 6 | 10 | 14 | | 5 | 2 | 6 | 10 | | | 6 | 2 | 6 | 2 | | | 7 | 2 | | | |
| | | s | p | d | f | | 1 | 2 | | | | | 2 | 2 | 6 | | | | 3 | 2 | 6 | 10 | | | 4 | 2 | 6 | 10 | 14 | | 5 | 2 | 6 | 10 | 2 | | 6 | 2 | 6 | | | | 7 | 2 | | | |
| | Filling Orbital | | | | Ground State Electron Configuration | | | | Ground State Electron Configuration with free Orbitals (n=27) | | |  |  | Ground State Electron Configuration with compressed Orbitals (n=162) | | |  |  | | | | Singularity | | | | | s | p | d | f | g | h | i | j | 1 | 2 | | | | | | | | 2 | 2 | 6 | | | | | | | 3 | 2 | 6 | 10 | | | | | | 4 | 2 | 6 | 10 | 14 | | | | | 5 | 2 | 6 | 10 | 2 | 12 | 18 | | | | 6 | 2 | 6 | 10 | 14 | 18 | 22 | | | 7 | 2 | | 10 | 14 | 18 | 22 | 26 | | 8 | | | | | | | | |
| | | | Term Symbol | 3F 2 | | Discovery | Discovered by J.J. Berzelius (Stockholm, Sweden) in 1829 | | Name Derived From | Named after Thor (Norsk god of war) |
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