A.A.Baikov Institute of Metallurgy and Materials Science

DATABASE ON PROPERTIES OF CHEMICAL ELEMENTS
Properties of element Pa
PropertyValueCommentsReferences
Atomic concentration4,01(1023 m-3)  13823
Atomic electron scattering factor at 0.53,55 13823
Atomic environment number (Villars, Daams)14  13823
Atomic number start counting left top, left-right sequence91  13823
Atomic weight231,036(10-3 kg)  13823
Boiling temperature4300
 13823
Charge nuclear effective (Clementi)9 13823
Compression modulus0,76(GPa)  13823
Density15370
 13823
Distance from core electron (Schubert)1,06(A) 13823
Distance from valence electron (Schubert)1,89(A) 13823
Electrochemical weight equivalent0,59845(mg*K-1)  13823
Electron affinity50
 13823
Electronegativity (Alfred-Rochow)1,14 13823
Electronegativity (Martynov&Batsanov)1,5 13823
Electronegativity (Pauling)1,4 13823
Electronegativity absolute3,5 13823
Energy cohesive (Brewer)6,7
 13823
Energy of ionization first514,7
 13823
Energy of ionization second1106
 13823
Energy of ionization third1713
 13823
Enthalpy of atomization607
 13823
Enthalpy of melting12,3
 18453
Enthalpy of melting16,7
 13823
Enthalpy of vaporization481
 13823
Entropy of solid51,6
 18453
Entropy of solid51,91632
 13823
Group number3 13823
Magnetic frequency of nuclei12 13823
Magnetic resonance1(MHz)  13823
Mass attenuation coefficient for MoKα120(cm2*g-1)  13823
Melting temperature1843
 18453
Melting temperature2113
 13823
Mendeleev chemists sequence28  13823
Mendeleev d-t start left20  13823
Mendeleev d-t start right83  13823
Mendeleev H d-t start left19  13823
Mendeleev H d-t start right84  13823
Mendeleev H t-d start left20  13823
Mendeleev H t-d start right85  13823
Mendeleev Pettifor46  13823
Mendeleev Pettifor regular45  13823
Mendeleev t-d start left21  13823
Mendeleev t-d start right84  13823
Molar heat capacity27,61
 13823
Molar heat capacity39,7
 18453
Moment nuclear magnetic1(mu) 13823
Nuclear charge effective (Slater)1,8 13823
Oxidation state first 3 13823
Periodic number start counting bottom right, right-left sequence13  13823
Periodic number start counting left bottom, left-right sequence5  13823
Periodic number start counting top right, right-left sequence99  13823
Quantum number7 13823
Radii covalent162
 13823
Radii metal (Waber)1,63(A) 13823
Radii pseudo-potential (Zunger)4,96(a.u.) 13823
Resistivity electrical17,7(10-8 Ohm*m)  13823
Spectral lines no262 13823
Spin nuclei3(h) 13823
Thermal neutron capture cross section500(barns) 13823
Valence electron number5 13823
Volume of atom (Villars, Daams)2,503(10-2 nm3)  13823
PropertyC.N.Radii ionic (Shannon)CommentsReferences
Pa+361,040 Å 13826
Pa+460,900 Å 13826
Pa+481,010 Å 13826
Pa+560,780 Å 13826
Pa+580,910 Å 13826
Pa+590,950 Å 13826
PropertyValueCommentsReferences
Radii ionic (Bokii & Belov)
Pa+31,060 Å 13824
Pa+40,910 Å 13824
Radii ionic (Yagoda)
Pa+31,080 Å 13824
Pa+40,960 Å 13824
Pa+50,870 Å 13824