Periodic table of elements

81 - Thallium [Tl]

81: Thallium - Thallium [Tl]
Group: 13
Period: 6
Atomic number: 81
Atomic mass: 204.3833
Configuration: [Xe] 4f145d106s26p1
Atomic radius: 156 pm
Covalent radius: 145 pm
Electron affinity: 19.2 eV
Ionization energy: 6.1082 eV
Electronic term: 2P1/2
Mass fraction in the earth crust: 0.00000053
Mass fraction in the earth space: 0.0000000005
Electronegativity: 1.62

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