Kalio
19
K
Grupo
1
Perio
4
Bloko
s
Protonoj
Elektronoj
Neŭtronoj
19
19
20
Ĝeneralaj Propraĵoj
Atoma Nombro
19
Atommaso
39,0983
Amasa Nombro
39
Kategorio
Alkalaj metaloj
Koloro
Arĝento
Radioaktiva
Ne
De la Angla vorto potash, poto cindroj; Latina vorto kalium, Araba vorto qali, alkalo
Kristala Strukturo
Korpo Centrita Kubo
Historio
Potassium's symbol K comes from 'kalium' the name of the element in Germany and Scandinavia.
Potassium metal was first isolated in 1807 by Sir Humphry Davy, who derived it from caustic potash by the use of electrolysis of the molten salt with the newly discovered voltaic pile.
Potassium was the first metal that was isolated by electrolysis.
Potassium metal was first isolated in 1807 by Sir Humphry Davy, who derived it from caustic potash by the use of electrolysis of the molten salt with the newly discovered voltaic pile.
Potassium was the first metal that was isolated by electrolysis.
Elektronoj per ŝelo
2, 8, 8, 1
Elektrona Agordo
[Ar] 4s1
People whose diets are low in potassium can suffer from hypokalemia
Fizikaj Propraĵoj
Fazo
Solido
Denso
0,862 g/cm3
Fandpunkto
336,53 K | 63,38 °C | 146,08 °F
Bolpunkto
1032,15 K | 759 °C | 1398,2 °F
Varmo de Fuzio
2,33 kJ/mol
Varmo de Vaporiĝo
76,9 kJ/mol
Specifa Varmo Kapacito
0,757 J/g·K
Krusta Abundo
1,5%
Universa Abundo
0,0003%
CAS Nombro
7440-09-7
PubChem Kunmetita Identiga Nombro
5462222
Atomaj Propraĵoj
Atoma Radiuso
227 pm
Kovalenta Radiuso
203 pm
Elektronegativeco
0,82 (Pauling-skalo)
Potencialo de jonigo
4,3407 eV
Atoma Volumo
45,46 cm3/mol
Termika Kondukto
1,024 W/cm·K
Oksidaj Ŝtatoj
-1, 1
Aplikoj
The greatest demand for potash has been in its use for fertilizers.
Potassium is an essential constituent for plant growth and is found in most soils.
Potassium nitrate is the main explosive ingredient in gunpowder.
Potassium hydroxide is used in the manufacture of soft soaps and as an electrolyte in alkaline batteries.
Potassium is an essential constituent for plant growth and is found in most soils.
Potassium nitrate is the main explosive ingredient in gunpowder.
Potassium hydroxide is used in the manufacture of soft soaps and as an electrolyte in alkaline batteries.
Potassium must be handled with great care with full skin and eye protection
Izotopoj
Stabilaj Izotopoj
39K, 41KMalstabilaj Isotopoj
32K, 33K, 34K, 35K, 36K, 37K, 38K, 40K, 42K, 43K, 44K, 45K, 46K, 47K, 48K, 49K, 50K, 51K, 52K, 53K, 54K, 55K