atomic_number: 81
symbol: Tl
name: Thallium
category: Metal
category_label: Post Trans Metal
period: 6
group: 13
group_label: 13 IIIA
block: p
grid_row: 6
grid_col: 13
phase: solid
lab_made: false
radioactive_marker: false
is_radioactive: false
atomic_mass: '204.38'
atomic_mass_value: 204.38
atomic_mass_most_stable_isotope: false
oxidation_states: 3 *1*
oxidation_states_parsed:
- state: '3'
  common: false
- state: '1'
  common: true
ionization_energy: '6.108'
ionization_energy_ev: 6.108
electron_configuration: '[Xe] 4f^{14}5d^{10}6s^{2}6p^{1}'
electron_configuration_formatted: '[Xe]4f¹⁴5d¹⁰6s²6p¹'
electron_configuration_html: '[Xe]4f<sup>14</sup>5d<sup>10</sup>6s<sup>2</sup>6p<sup>1</sup>'
atomic_radius: '1.96'
atomic_radius_angstrom: 1.96
electron_affinity: '0.377'
electron_affinity_ev: 0.377
rsc_url: https://www.rsc.org/periodic-table/element/81/thallium