atomic_number: 57
symbol: La
name: Lanthanum
category: Lanthanide
category_label: Lanthanide
period: 6
group: 3
group_label: 3 IIIA
block: f
grid_row: 9
grid_col: 4
phase: solid
lab_made: false
radioactive_marker: false
is_radioactive: false
atomic_mass: '138.905'
atomic_mass_value: 138.905
atomic_mass_most_stable_isotope: false
oxidation_states: '*3*'
oxidation_states_parsed:
- state: '3'
  common: true
ionization_energy: '5.577'
ionization_energy_ev: 5.577
electron_configuration: '[Xe] 5d^{1}6s^{2}'
electron_configuration_formatted: '[Xe]5d¹6s²'
electron_configuration_html: '[Xe]5d<sup>1</sup>6s<sup>2</sup>'
atomic_radius: '2.43'
atomic_radius_angstrom: 2.43
electron_affinity: '0.47'
electron_affinity_ev: 0.47
rsc_url: https://www.rsc.org/periodic-table/element/57/lanthanum