atomic_number: 33
symbol: As
name: Arsenic
category: Metalloid
category_label: Metalloid
period: 4
group: 15
group_label: 15 VA
block: p
grid_row: 4
grid_col: 15
phase: solid
lab_made: false
radioactive_marker: false
is_radioactive: false
atomic_mass: '74.922'
atomic_mass_value: 74.922
atomic_mass_most_stable_isotope: false
oxidation_states: 5 *3* -3
oxidation_states_parsed:
- state: '5'
  common: false
- state: '3'
  common: true
- state: '-3'
  common: false
ionization_energy: '9.788'
ionization_energy_ev: 9.788
electron_configuration: '[Ar] 3d^{10}4s^{2}4p^{3}'
electron_configuration_formatted: '[Ar]3d¹⁰4s²4p³'
electron_configuration_html: '[Ar]3d<sup>10</sup>4s<sup>2</sup>4p<sup>3</sup>'
atomic_radius: '1.85'
atomic_radius_angstrom: 1.85
electron_affinity: '0.804'
electron_affinity_ev: 0.804
rsc_url: https://www.rsc.org/periodic-table/element/33/arsenic