K
Potassium
19
Atomic Number: 19
Atomic mass: 39.09831
Ionization energy: 419
Electronaffinity: -48
Covalent radius: 196
Calculated radius: 243
Empirical radius: 220
Vanderwaals radius: 275
Electronegativity: 0.82
Density: 0.86
Oxidation states: 1
Melting point: 337
Boiling point: 1032
Electron configuration: [Ar] 4s1
Element group: 1
Element period: 4

To check spectrum of Potassium out please install Adobe Flash Player

{{filed}}
{{line[filed]}}