Rubidium (Rb)
Atomic number
37
Mass number
85
Electronegativity
0.82
Covalent radius
2.16
Atomic radius
2.98
Melting point
312.64
Boiling point
961.0
Density
1.53
Specific heat
0.363
Electrical conductivity
0.0779e6
Thermal conductivity
0.582