A.A.Baikov Institute of Metallurgy and Materials Science

DATABASE ON PROPERTIES OF CHEMICAL ELEMENTS
Properties of element Ac
PropertyValueCommentsReferences
Atomic concentration2,66(1023 m-3)  13823
Atomic electron scattering factor at 0.53,49 13823
Atomic environment number (Villars, Daams)12  13823
Atomic number start counting left top, left-right sequence89  13823
Atomic weight227,028(10-3 kg)  13823
Boiling temperature3470
 13823
Charge nuclear effective (Clementi)9 13823
Compression modulus0,25(GPa)  13823
Density10060
 13823
Distance from core electron (Schubert)1,16(A) 13823
Distance from valence electron (Schubert)2,63(A) 13823
Electrochemical weight equivalent0,78411(mg*K-1)  13823
Electron affinity50
 13823
Electronegativity (Alfred-Rochow)1 13823
Electronegativity (Martynov&Batsanov)1,1 13823
Electronegativity (Pauling)1,1 13823
Electronegativity absolute5,3 13823
Energy cohesive (Brewer)4,25
 13823
Energy of ionization first474,6
 13823
Energy of ionization second1065
 13823
Energy of ionization third1634
 13823
Enthalpy of atomization406
 13823
Enthalpy of melting10,5
 13823
Enthalpy of vaporization293
 13823
Entropy of solid56,5
 20518
Entropy of solid61,9
 18453
Entropy of solid62,802
 13823
Group number3 13823
Magnetic frequency of nuclei13,1 13823
Magnetic resonance1(MHz)  13823
Mass attenuation coefficient for MoKα120(cm2*g-1)  13823
Melting temperature1323
 13823
Melting temperature1500
 5383
Mendeleev chemists sequence22  13823
Mendeleev d-t start left14  13823
Mendeleev d-t start right87  13823
Mendeleev H d-t start left13  13823
Mendeleev H d-t start right88  13823
Mendeleev H t-d start left16  13823
Mendeleev H t-d start right91  13823
Mendeleev Pettifor48  13823
Mendeleev Pettifor regular47  13823
Mendeleev t-d start left17  13823
Mendeleev t-d start right90  13823
Molar heat capacity27,2
 13823
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 sequence15  13823
Periodic number start counting left bottom, left-right sequence3  13823
Periodic number start counting top right, right-left sequence101  13823
Quantum number7 13823
Radii covalent203
 13823
Radii metal (Waber)1,878(A) 13823
Radii pseudo-potential (Zunger)3,12(a.u.) 13823
Spectral lines no7 13823
Spin nuclei3(h) 13823
Thermal neutron capture cross section1(barns) 13823
Valence electron number3 13823
Volume of atom (Villars, Daams)4,557(10-2 nm3)  13823
Work function2,7(eV)  13823
PropertyC.N.Radii ionic (Shannon)CommentsReferences
Ac+361,120 Å 13826
PropertyValueCommentsReferences
Radii ionic (Bokii & Belov)
Ac+31,110 Å 13824
Radii ionic (Yagoda)
Ac+31,140 Å 13824