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Th

Thorium

#90 · Actinide

Mass232.038 u
Density11.72 g/cm³
Melting2115.0 K
Boiling5061.0 K
Electronegativity1.3
Ionization Energy587.0 kJ/mol
Atomic Radius180.0 pm
Blockf-block
State (RT)Solid
Config[Rn] 6d2 7s2
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