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Tl

Thallium

#81 · Post-Transition Metal

Mass204.38 u
Density11.85 g/cm³
Melting577.0 K
Boiling1746.0 K
Electronegativity1.62
Ionization Energy589.4 kJ/mol
Atomic Radius170.0 pm
Blockp-block
State (RT)Solid
Config[Xe] 4f14 5d10 6s2 6p1
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