atomic_number: 97
symbol: Bk
name: Berkelium
category: Actinide
category_label: Actinide
period: 7
group: null
group_label: Actinide
block: f
grid_row: 10
grid_col: 12
phase: solid
lab_made: true
radioactive_marker: false
is_radioactive: true
atomic_mass: '[247]'
atomic_mass_value: 247.0
atomic_mass_most_stable_isotope: true
oxidation_states: 4 *3*
oxidation_states_parsed:
- state: '4'
  common: false
- state: '3'
  common: true
ionization_energy: '6.198'
ionization_energy_ev: 6.198
electron_configuration: '[Rn] 5f^{9}7s^{2}'
electron_configuration_formatted: '[Rn]5f⁹7s²'
electron_configuration_html: '[Rn]5f<sup>9</sup>7s<sup>2</sup>'
atomic_radius: '2.44'
atomic_radius_angstrom: 2.44
electron_affinity: U
electron_affinity_ev: null
rsc_url: https://www.rsc.org/periodic-table/element/97/berkelium