CAS Number7440-50-8
PubChem CID23978
Радіус атома128
Молярний об'єм7,1
Атомна маса63,546
Температура кипіння2 562
Bulk Modulus
КатегоріяПерехідні метали
Кристалічна СтруктураГранецентрована кубічна
Ковалентний радіус132
Electrical Resistivity
Електронна конфігурація[Ar] 3d10 4s1
Електронні оболонки2, 8, 18, 1
Теплота плавлення13,1
Теплота випаровування300
іонізаційний потенціал7,726
Magnetic Ordering
Magnetic Susceptibility
Маса ізотопу63,546
Mass Number29
Температура плавлення1 084,6
Атомний номер64
Ступені окиснення1, 2, 3, 4
ФазаТверде тіло
Poisson Ratio
Shear Modulus
Питома теплоїмність0,385
Van der Waals radius
Young's Modulus
Достаток в земній корі0.0068%
Достаток в Всесвіті6×10-6%
Cu Мідь 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"

Ізотопи калію

Standard Atomic Weight


Стабільні ізотопи

63Cu 65Cu

Нестабільні ізотопи

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.