Svojstva

CAS broj7440-50-8
PubChem CID23978
Atomski radijus128
Atomski volumen7,1
Relativna atomska masa63,546
Blokd
Vrelište2.562
Modul stišljivosti
KategorijaPrijelazni metali
Kristalna strukturaKubna plošno centrirana
BojaBakrena
Kovalentni radijus132
Gustoća8,96
Električna otpornost
Elektronska konfiguracija[Ar] 3d10 4s1
Elektrona po ljusci2, 8, 18, 1
Elektronegativnost1,9
Elektroni29
Skupina11
Toplina taljenja13,1
Toplina isparavanja300
Potencijal ionizacije7,726
Magnetsko redanje
Magnetska osjetljivost
Masa63,546
Maseni broj29
Talište1.084,6
NazivBakar
Neutroni35
Atomski broj64
Stanja oksidacije1, 2, 3, 4
Perioda4
Agregacijsko stanjeČvrsto
Poissonov omjer
Protoni29
Modul smicanja
Specifični toplinski kapacitet0,385
SimbolCu
Toplinska vodljivost4,01
Van der Waalsov radijus
Youngov modul
Obilnost
Zastupljenost u Zemljinoj kori0.0068%
Zastupljenost u svemiru6×10-6%
Cu Bakar 29 63.546 11 4 d 29 1083.0 2567.0 [Ar] 3d10 4s1 2 8 18 1 8.96 0.0068% Copper Cubic: Face centered 1.9 1.85 {"1":"745.5","2":"1957.9","3":"3555","4":"5536","5":"7700","6":"9900","7":"13400","8":"16000","9":"19200","10":"22400","11":"25600","12":"35600","13":"38700","14":"42000","15":"46700","16":"50200","17":"53700","18":"61100","19":"64702","20":"163700","21":"174100","22":"184900","23":"198800","24":"210500","25":"222700","26":"239100","27":"249660","28":"1067358","29":"1116105"} 746 118.4 138 +2,1 1.28 7.1 13.14 300.5 0.385 401.0 0 Solid, Diamagnetic, Conductor, TransitionMetal, Metal, Stable, Natural KOP-er Malleable, ductile, reddish-brown metal. Most often used as an electrical conductor. Also used in the manufacture of water pipes. Its alloys are used in jewelry and for coins. Pure copper occurs rarely in nature. Usually found in sulfides as in chalcopyrite (CuFeS2), coveline (CuS), chalcosine (Cu2S) or oxides like cuprite (Cu2O). sWvp_Z2kfYs Copper
Kalijev simbol K dolazi iz njemačkog i skandinavskog naziva kalium.

Kalij je prvi izolirao Sir Humphry Davy 1807. iz kaustične potaše elektrolizom rastaljene soli pomoću novootkrivenog Voltinog elektostatičkog stupa.

Kalij je prvi metal koji je izoliran elektrolizom. Od latinske riječi kalium, arapske qali, lug 29 From the Latin word "cuprum" meaning the island of "Cyprus"

Isotopes of Potassium

Standard Atomic Weight

63.546(3)

Stabilni izotopi

63Cu 65Cu

Nestabilni izotopi

52Cu 53Cu 54Cu 55Cu 56Cu 57Cu 58Cu 59Cu 60Cu 61Cu 62Cu 64Cu 66Cu 67Cu 68Cu 69Cu 70Cu 71Cu 72Cu 73Cu 74Cu 75Cu 76Cu 77Cu 78Cu 79Cu 80Cu

Potassium must be handled with great care with full skin and eye protection
People whose diets are low in potassium can suffer from hypokalemia
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.