Kopar
29
Cu
Gruppe
11
Periode
4
Blokk
d
Proton
Elektron
Nøytron
29
29
35
Generelle eigenskapar
Atomnummer
29
Atommasse
63,546
Massetal
64
Kategori
Transisjonsmetall
Farge
Kopar
Radioaktiv
Nei
From the Latin word cuprum, from the island of Cyprus
Krystallstruktur
Flatesentrert kubisk
Historie
Copper occurs naturally as native copper and was known to some of the oldest civilizations on record.
Earliest estimates of the discovery of copper suggest around 9000 BC in the Middle East.
It was one of the most important materials to humans throughout the copper and bronze ages.
Earliest estimates of the discovery of copper suggest around 9000 BC in the Middle East.
It was one of the most important materials to humans throughout the copper and bronze ages.
Elektron per energinivå
2, 8, 18, 1
Elektronkonfigurasjon
[Ar] 3d10 4s1
Pure copper is orange-red and acquires a reddish tarnish when exposed to air
Fysiske eigenskapar
Tilstandsform
Fast stoff
Tettleik
8,96 g/cm3
Smeltepunkt
1357,75 K | 1084,6 °C | 1984,28 °F
Kokepunkt
2835,15 K | 2562 °C | 4643,6 °F
Smeltevarme
13,1 kJ/mol
Fordampingsvarme
300 kJ/mol
Spesifikk varmekapasitet
0,385 J/g·K
Førekomst i jordskorpa
0,0068%
Førekomst i universet
6×10-6%
CAS-nummer
7440-50-8
PubChem CID-nummer
23978
Atom eigenskapar
Atomradius
128 pm
Kovalent radius
132 pm
Elektronegativitet
1,9 (Paulings skala)
Ioniseringspotensial
7,7264 eV
Molart volum
7,1 cm3/mol
Termisk konduktivitet
4,01 W/cm·K
Oksidasjonstrinn
1, 2, 3, 4
Bruksområde
Copper is often used for electrical wiring applications and for household plumbing applications.
Copper sulfate is used as a fungicide and as an algicide in rivers, lakes and ponds.
It is also used in cookware and cooking utensils.
Commercially important alloys such as brass and bronze are made with copper and other metals.
Copper sulfate is used as a fungicide and as an algicide in rivers, lakes and ponds.
It is also used in cookware and cooking utensils.
Commercially important alloys such as brass and bronze are made with copper and other metals.
Cooking acidic food in copper pots can cause toxicity
Isotopar
Stabile isotopar
63Cu, 65CuUstabile isotopar
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