Potassium
Atomic number:
19
Atomic weight:
39.0983
Shells:
2,8,8,1
Orbitals:
[Ar] 4s1
Melting point:
63.25°C
Boiling point:
759.9°C
Covalent radius:
2.03
Å
Atomic volume:
45.46
cm³/mol
Atomic radius:
2.77
Å
Ionic radius:
1.51 (+1)
Å
Electronegativity:
0.82
Oxidation states:
1st ionization pot.:
4.3407
V
2nd ionization pot.:
31.625
V
3rd ionization pot.:
45.72
V
Specific heat:
0.75
J/gK
Heat of fusion:
2.334
kJ/mol
Heat of vapor.:
79.870
kJ/mol
Thermal conduct.:
1.024
W/cmK
Electrical conduct.:
0.139
10^6/cm ohm
Density:
0.862
g/cm³
Valence:
1
