Koppar

Tecken	Cu
Atomnummer	29
Grupp	11 (Myntmetaller)
Period	4
Block	d
Ämnesklass	Övergångsmetall

Utseende	Red-orange metallic luster
Färg	Koppar

Antal protoner	29 p+
Antal neutroner	35 n0
Antal elektroner	29 e-

Från Wikipedia, den fria encyklopedinKoppar (latinskt namn, Cuprum) är ett rödaktigt, halvädelt metalliskt grundämne, tillhörande myntmetallerna. Det latinska namnet cuprum betyder egentligen "metallen från Cypern". Cypern har nämligen alltid varit rikt på koppar.

Fas vid STP	Fast
Densitet	8.96 g/cm3
Relativ atommassa	63.5463 u

Smältpunkt	1357.77 K 1084.62 °C 1984.316 °F
Kokpunkt	2835 K 2561.85 °C 4643.33 °F
Ångbildningsvärme	300.5 kJ/mol

Elektronegativitet (Paulingskalan)	1.9
Elektronaffinitet	119.235 kJ/mol
Oxidationstal	−2, 0, +1, +2, +3, +4 (a mildly basic oxide)
Jonisationspotential	745.5 kJ/mol 1957.9 kJ/mol 3555 kJ/mol 5536 kJ/mol 7700 kJ/mol 9900 kJ/mol 13400 kJ/mol 16000 kJ/mol 19200 kJ/mol 22400 kJ/mol 25600 kJ/mol 35600 kJ/mol 38700 kJ/mol 42000 kJ/mol 46700 kJ/mol 50200 kJ/mol 53700 kJ/mol 61100 kJ/mol 64702 kJ/mol 163700 kJ/mol 174100 kJ/mol 184900 kJ/mol 198800 kJ/mol 210500 kJ/mol 222700 kJ/mol 239100 kJ/mol 249660 kJ/mol 1067358 kJ/mol 1116105 kJ/mol

Elektronkonfiguration Kortfattad konfiguration	[Ar] 3d10 4s1
Elektronkonfiguration Full konfiguration	1s2 2s2 2p6 3s2 3p6 3d10 4s1
Elektronkonfigurationsdiagram	1s2 2s2 2p6 3s2 3p6 3d10 4s1
Elektroner per skal	2, 8, 18, 1
Outer shell electrons	1
Valence electrons (incl. d)	1
Valency-elektroner	1,2
Bohrs atommodell	Figur: Skaldiagram över Koppar (Cu) atom.
Orbitaldiagram	1s 2s 2p 3s 3p 3d 4s

Upptäckt

Middle East (9000 f.Kr.)

Upptäckten av koppar Copper was probably the first metal mined and crafted by humans. It was originally obtained as a native metal and later from the smelting of ores. 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 Chalcolithic and Bronze Ages. Copper beads dating from 6000 BC have been found in Çatal Höyük, Anatolia and the archaeological site of Belovode on the Rudnik mountain in Serbia contains the world's oldest securely dated evidence of copper smelting from 5000 BC.

Original word	cuprum
Language of origin	Latin
Name source	Plats
Meaning	“From Cyprus”
Land	Cyprus
Symbol origin	Symbol Cu is from the Latin name cuprum ("copper").
Naming The name is derived from the Old English name 'coper' in turn derived from the Latin ‘Cyprium aes’, meaning ‘Cyprus metal’, the island where the Romans first obtained copper.

CAS Number	7440-50-8
ChemSpider ID	22414
EC number	231-159-6
PubChem CID Number	23978