Kopar

29 NikkelKoparSink


Cu

Ag

Skeiðbundna skipanin
Útsjónd

{{{Útsjónd}}}
Alment
Navn: Kopar
Evnafrøðiligt tekn: Cu
Atomnummar: 29
Elektronsamanseting: [Ar] 3d10 4s1
Elektronir pr. skal: 2, 8, 18, 1
Atomradius: 135 pm
Kovalent radius: 138 pm
Van der Waals radius: 140 pm
Evnafrøðiligir eginleikar
Oxidatiónstrin: 2 (veikt basiskt oxid)
Elektronegativitetur: 1,90 (Paulings skala)
Alisfrøðiligir eginleikar
Evnisnøgd: 8,96 g/cm3
Massefylde på væskeform: 8,02 g/cm3
Kókipunkt: 2562 °C
Mekaniskir eginleikar
Koparskiva, sum er av 99,95% reinum kopari

Kopar (latín: cuprum, uppkallað eftir Kýpros) er tað 29. frumevni í tí skeiðbundnu skipanini, og hevur tað evnafrøðiliga súmbolið Cu. Í sínum reina skapi sær hetta skiftismetalið út sum eitt skínandi metal við einum serstakum reydligum liti.

Eginleikar

Kopar er rættiliga líkt silvuri og gulli, ið eins og kopar eru í bólki 11. Øll hesi metalini eru løtt at arbeiða við.

Keldur

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