atomic_number: 73
symbol: Ta
name: Tantalum
category: TransMetal
category_label: Transitional Metal
period: 6
group: 5
group_label: 5 VB
block: d
grid_row: 6
grid_col: 5
phase: solid
lab_made: false
radioactive_marker: false
is_radioactive: false
atomic_mass: '180.948'
atomic_mass_value: 180.948
atomic_mass_most_stable_isotope: false
oxidation_states: '*5*'
oxidation_states_parsed:
- state: '5'
  common: true
ionization_energy: '7.549'
ionization_energy_ev: 7.549
electron_configuration: '[Xe] 4f^{14}5d^{3}6s^{2}'
electron_configuration_formatted: '[Xe]4f¹⁴5d³6s²'
electron_configuration_html: '[Xe]4f<sup>14</sup>5d<sup>3</sup>6s<sup>2</sup>'
atomic_radius: '2.22'
atomic_radius_angstrom: 2.22
electron_affinity: '0.322'
electron_affinity_ev: 0.322
rsc_url: https://www.rsc.org/periodic-table/element/73/tantalum