Kupari

Kemiallinen merkki: Cu
Järjestysluku: 29
Kategoria: siirtymämetallit
Ryhmä: 11
Jakso: 4
Lohko: d
Moolimassa: 63,546 g/mol
Elektronia kuorilla: 2, 8, 18, 1
CAS-numero: 7440-50-8
Olomuoto: kiinteä
Tiheys: 8,94 kg/l (lähellä huoneenlämpöä)
Sulamispiste: 1357,77 K (1084,62 °C, 1984,32 °F)
Kiehumispiste: 2835 K (2562 °C, 4643 °F)
Kiderakenne: face centered cubic
Hapetusluvut: 1, 2, 3, 4
Elektronegatiivisuus: 1,90 (Pauling-asteikko)
Nimen alkuperä: Cyprium
Nimen tarkoitus: 'metal of Cyprus', as it was principally mined in Cyprus, though later shortened to Cuprum
Faktoja:
- is a ductile metal with very high thermal and electrical conductivity
- has played a significant part in the history of mankind
- is used as a thermal conductor, an electrical conductor, a building material, and a constituent of various metal alloys
- in animals, including humans, it is found widely in tissues, with concentration in liver, muscle, and bone
- copper 2+ ions are soluble in water, where they function at low concentration as bacteriostatic substances and fungicides