A.A.Baikov Institute of Metallurgy and Materials Science

DATABASE ON PROPERTIES OF CHEMICAL ELEMENTS
Properties of element Fr
PropertyValueCommentsReferences
Atomic electron scattering factor at 0.53,43 13823
Atomic environment number (Villars, Daams)5  13823
Atomic number start counting left top, left-right sequence87  13823
Atomic weight223(10-3 kg)  13823
Atomic weight223,0197(10-3 kg)  14358
Boiling temperature950
 13823
Charge nuclear effective (Clementi)8 13823
Compression modulus0,02(GPa)  13823
Density7000
 13823
Distance from core electron (Schubert)1,61(A) 13823
Distance from valence electron (Schubert)6(A) 13823
Electrochemical weight equivalent1(mg*K-1)  13823
Electron affinity44
 13823
Electronegativity (Alfred-Rochow)0,86 13823
Electronegativity (Martynov&Batsanov)0,7 13823
Electronegativity (Pauling)0,7 13823
Electronegativity absolute1,9 13823
Energy cohesive (Brewer)0,75
 13823
Energy of ionization first375
 13823
Energy of ionization second2123
 13823
Energy of ionization third3088
 13823
Enthalpy of atomization72,8
 13823
Enthalpy of melting2,4
 13823
Enthalpy of vaporization55
 13823
Entropy of solid94,203
 13823
Group number1 13823
Magnetic frequency of nuclei5 13823
Magnetic resonance1(MHz)  13823
Mass attenuation coefficient for MoKα120(cm2*g-1)  13823
Melting temperature300
 13823
Mendeleev chemists sequence3  13823
Mendeleev d-t start left1  13823
Mendeleev d-t start right97  13823
Mendeleev H d-t start left1  13823
Mendeleev H d-t start right98  13823
Mendeleev H t-d start left6  13823
Mendeleev H t-d start right103  13823
Mendeleev Pettifor7  13823
Mendeleev Pettifor regular7  13823
Mendeleev t-d start left7  13823
Mendeleev t-d start right103  13823
Molar heat capacity31,7
 13823
Moment nuclear magnetic1(mu) 13823
Nuclear charge effective (Slater)2,2 13823
Oxidation state first 1 13823
Periodic number start counting bottom right, right-left sequence17  13823
Periodic number start counting left bottom, left-right sequence1  13823
Periodic number start counting top right, right-left sequence103  13823
Quantum number7 13823
Radii covalent250
 13823
Radii metal (Waber)2,8(A) 13823
Radii pseudo-potential (Zunger)4,37(a.u.) 13823
Spin nuclei3(h) 13823
Thermal neutron capture cross section1(barns) 13823
Valence electron number1 13823
Vapour pressure at Tm0,000293(N*m-2) 13823
Volume of atom (Villars, Daams)13(10-2 nm3)  13823
Work function1,8(eV)  13823
PropertyC.N.Radii ionic (Shannon)CommentsReferences
Fr+161,800 Å 13826
PropertyValueCommentsReferences
Radii ionic (Yagoda)
Fr+11,740 Å 13824