Protactinium

Atom properties




Radii


Ionic radius (Å): Pa(V): 0.78 (6-coordinate) [1]
Pa(IV): 0.90 (6-coordinate) [1]
Pa(III): 1.04 (6-coordinate) [1]


Electron configuration


Ground state: 1s2-2s2-2p6-3s2-3p6-3d10-4s2-4p6-4d10-4f14-5s2-5p6-5d10-5f2-6s2-6p6-6d1-7s2