›› Physical and chemical properties of Potassium

Atomic Number:19
Element Symbol:K
Element Name:Potassium
Atomic Weight:39.0983
Group Number:1
Group Name:Alkali metal
Period Number:4
Ground State Configuration:[Ar] 4s
Ground State Level:2S1/2
Standard State:Solid
Common Valences:0,1
Bond Length:454.4
Atomic Radius Empirical:220
Atomic Radius Calculated:243
Covalent Radius Empirical:196
Vander Waals Radius:275
Electron Affinity:48.4
First Ionization Energy:418.8
Pauling Electronegativity:0.82
Sanderson Electronegativity:0.45
Allred Rochow Electronegativity:0.91
Mulliken Jaffe Electronegativity:0.73
Allen Electronegativity:0.734
Density Of Solid:856
Molar Volume:45.94
Velocity Of Sound:2000
Rigidity Modulus:1.3
Bulk Modulus:3.1
Mineral Hardness:0.4
Brinell Hardness:0.363
Electrical Resistivity:7
Melting Point:63.38
Boiling Point:759
Critical Temperature:1950
Thermal Conductivity:100
Enthalpy Of Fusion:2.33
Enthalpy Of Vaporization:76.9
Enthalpy Of Atmization:89
Most Common Oxidation Numbers:1
Color:Silvery white
Discovered By:Sir Humphrey Davy
Discovered At:England
Discovered When:1807
Origin Of Name:From the English word potash (pot ashes) and the Arabic word qali meaning alkali (the origin of the symbol K comes from the Latin word kalium)

Calculate the molecular weight of Potassium or molecular weight K.

Also see the full list of chemical elements and atomic weights.

››Compounds that contain Potassium

Potassium Bromide  KBr
Potassium Carbonate  K2CO3
Potassium Chlorate  KClO3
Potassium Chloride  KCl
Potassium Hydrogen Carbonate  KHCO3
Potassium Hydroxide  KOH
Potassium Iodide  KI
Potassium Nitrate  KNO3
Potassium Perchlorate  KClO4
Potassium Permanganate  KMnO4
Potassium Sulfate  K2SO4
Potassium Sulfide  K2S
Potassium Titanyl Phosphate  KTiOPO4
Potassium Metavanadate  KVO3
Tripotassium Phosphate  K3PO4
Potassium Clavulanate  C8H8KNO5
Potassium Bicarbonate  KHCO3
Potassium Tetrafluoroaluminate  KAlF4
Potassium Aluminate  K2Al2O4
Potassium Fluoroborate  KBF4
Potassium Bromate  KBrO3
Potassium Trifluoromethanesulfonate  KCHF3O3S
Potassium Formate  KCHO2
Potassium Methoxide  KCH3O
Potassium Cyanide  KCN
Potassium Cyanate  KCNO
Potassium Binoxalate  KC2HO4
Potassium Acetate  CH3CO2K
Potassium Ethoxide  KC2H5O
Potassium Propionate  K(C2H5COO)
Potassium Xanthogenate  KC3H5S2O
Potassium Dimethyldithiocarbamate  KC3H7NS2
Potassium Bitartrate  KC4H5O6
Potassium Benzoate  KC7H5O2
Potassium Fluoride  KF
Potassium Hydride  KH
Potassium Bifluoride  KHF2
Potassium Bisulfate  KHSO4
Potassium Diphosphate  KH2PO4
Potassium Borohydride  KH4B
Potassium Iodate  KIO3
Potassium Periodate  KIO4
Potassium Nitrite  KNO2
Potassium Azide  KN3
Potassium Niobate  KNbO3
Potassium Superoxide  KO2
Potassium Hexafluorophosphate  KPF6
Potassium Metaphosphate  KPO3
Potassium Perrhenate  KReO4
Potassium Perruthenate  KRuO4
Potassium Thiocyanate  KSCN
Potassium Tartrate  K2C4H4O6
Potassium Adipate  K2C6H8O4
Potassium Chromate  K2CrO4
Potassium Dichromate  K2Cr2O7
Potassium Ferrate  K2FeO4
Potassium Thiosulfate  K2H2S2O3
Potassium Oxide  K2O
Potassium Peroxide  K2O2
Potassium Tetrachloropallidate  K2PdCl4
Potassium Hexachlororuthenate  K2RuCl6
Potassium Metabisulfite  K2S2O5
Potassium Pyrosulfate  K2S2O7
Potassium Persulfate  K2S2O8
Potassium Selenide  K2Se
Potassium Hexafluorosilicate  K2SiF6
Potassium Silicate  K2SiO3
Potassium Telluride  K2Te
Potassium Tellurite  K2TeO3
Potassium Hexafluorotitanate  K2TiF6
Potassium Hexafluorozirconate  K2ZrF6
Potassium Hexafluoroaluminate  K3AlF6
Potassium Ferricyanide  K3(Fe(CN)6)
Potassium Pyrophosphate  K4P2O7
Potassium Nitride  K3N