Formula color symmetry space group No Pearson symbol a (pm) b (pm) c (pm) Z density, g/cm3
Pa silvery-gray tetragonal[1] I4/mmm 139 tI2 392.5 392.5 323.8 2 15.37
PaO rocksalt[27] Fm3m 225 cF8 496.1 4 13.44
PaO2 black fcc[27] Fm3m 225 cF12 550.5 4 10.47
Pa2O5 white Fm3m[27] 225 cF16 547.6 547.6 547.6 4 10.96
Pa2O5 white orthorhombic[27] 692 402 418
PaH3 black cubic[27] Pm3n 223 cP32 664.8 664.8 664.8 8 10.58
PaF4 brown-red monoclinic[27] C2/c 15 mS60 2
PaCl4 green-yellow tetragonal[36] I41/amd 141 tI20 837.7 837.7 748.1 4 4.72
PaBr4 brown tetragonal[37][38] I41/amd 141 tI20 882.4 882.4 795.7
PaCl5 yellow monoclinic[39] C2/c 15 mS24 797 1135 836 4 3.74
PaBr5 red monoclinic[38][40] P21/c 14 mP24 838.5 1120.5 1214.6 4 4.98
PaOBr3 monoclinic[38] C2 1691.1 387.1 933.4
Pa(PO3)4 orthorhombic[41] 696.9 895.9 1500.9
Pa2P2O7 cubic[41] Pa3 865 865 865
Pa(C8H8)2 golden-yellow monoclinic[42] 709 875 1062