atomic_number: 18
symbol: Ar
name: Argon
category: NobleGas
category_label: Noble gas
period: 3
group: 18
group_label: 18 VIIIA
block: p
grid_row: 3
grid_col: 18
phase: gas
lab_made: false
radioactive_marker: false
is_radioactive: false
atomic_mass: '39.95'
atomic_mass_value: 39.95
atomic_mass_most_stable_isotope: false
oxidation_states: '*0*'
oxidation_states_parsed:
- state: '0'
  common: true
ionization_energy: '15.76'
ionization_energy_ev: 15.76
electron_configuration: '[Ne] 3s^{2}3p^{6}'
electron_configuration_formatted: '[Ne]3s²3p⁶'
electron_configuration_html: '[Ne]3s<sup>2</sup>3p<sup>6</sup>'
atomic_radius: '1.88'
atomic_radius_angstrom: 1.88
electron_affinity: Ns
electron_affinity_ev: null
rsc_url: https://www.rsc.org/periodic-table/element/18/argon