Rubidium
Atomic number:
37
Atomic weight:
85.4678
Shells:
2,8,18,8,1
Orbitals:
[Kr] 5s1
Melting point:
38.89°C
Boiling point:
686°C
Covalent radius:
2.16
Å
Atomic volume:
55.9
cm³/mol
Atomic radius:
2.98
Å
Ionic radius:
1.61 (+1)
Å
Electronegativity:
0.82
Oxidation states:
1st ionization pot.:
4.1771
V
2nd ionization pot.:
27.28
V
3rd ionization pot.:
40.0
V
Specific heat:
0.363
J/gK
Heat of fusion:
2.192
kJ/mol
Heat of vapor.:
72.216
kJ/mol
Thermal conduct.:
0.582
W/cmK
Electrical conduct.:
0.0779
10^6/cm ohm
Density:
1.53
g/cm³
Valence:
1,2,3,4
