Ominaisuudet

CAS Number7440-50-8
PubChem CID23978
Atomisäde128
Moolitilavuus7,1
Atomipaino63,546
Lohkod
Kiehumispiste2 562
Bulk Modulus
LuokkaSiirtymäalkuaineet
KiderakennePintakeskinen kuutiollinen
VäriKupari
Kovalenttisäde132
Tiheys8,96
Electrical Resistivity
Orbitaalirakenne[Ar] 3d10 4s1
Elektroneja elektronikuorilla2, 8, 18, 1
Elektronegatiivisuus1,9
Electrons29
Ryhmä11
Sulamislämpö13,1
Höyrystymislämpö300
Ionisoitumispotentiaali7,726
Magnetic Ordering
Magnetic Susceptibility
Massa63,546
Mass Number29
Sulamispiste1 084,6
NimiKupari
Neutronia35
Järjestysluku64
Hapetusluvut1, 2, 3, 4
Jakso4
OlomuotoKiinteä
Poisson Ratio
Protonia29
Shear Modulus
Ominaislämpökapasiteetti0,385
TunnusCu
Lämmönjohtavuus4,01
Van der Waals radius
Young's Modulus
Esiintyvyys
Esiintyvyys maankuoressa0.0068%
Esiintyvyys maailmankaikkeudessa6×10-6%
Cu Kupari 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
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. From the English word, potash - pot ashes; Latin kalium, Arab qali, alkali 29 From the Latin word "cuprum" meaning the island of "Cyprus"

Isotopes of Potassium

Standard Atomic Weight

63.546(3)

Vakaat isotoopit

63Cu 65Cu

Epävakaat isotoopit

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.