atomic_number: 85
symbol: At
name: Astatine
category: Metalloid
category_label: Metalloid
period: 6
group: 17
group_label: 17 VIIA
block: p
grid_row: 6
grid_col: 17
phase: unknown
lab_made: false
radioactive_marker: false
is_radioactive: true
atomic_mass: '[210]'
atomic_mass_value: 210.0
atomic_mass_most_stable_isotope: true
oxidation_states: 7 5 3 1 *-1*
oxidation_states_parsed:
- state: '7'
  common: false
- state: '5'
  common: false
- state: '3'
  common: false
- state: '1'
  common: false
- state: '-1'
  common: true
ionization_energy: U
ionization_energy_ev: null
electron_configuration: '[Xe] 4f^{14}5d^{10}6s^{2}6p^{5}'
electron_configuration_formatted: '[Xe]4f¹⁴5d¹⁰6s²6p⁵'
electron_configuration_html: '[Xe]4f<sup>14</sup>5d<sup>10</sup>6s<sup>2</sup>6p<sup>5</sup>'
atomic_radius: '2.02'
atomic_radius_angstrom: 2.02
electron_affinity: '2.8'
electron_affinity_ev: 2.8
rsc_url: https://www.rsc.org/periodic-table/element/85/astatine