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Frumevni


Kýprosfrumevniskeiðbundnu skipaninimetalsilvurigulli












Kopar




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29

Nikkel ← Kopar → Sink



Cu

Ag

Cu-TableImage.png
Skeiðbundna skipanin




























Útsjónd

Cu,29.jpg
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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Sí miðlasavnið

»Kopar« í Wikimedia Commons.










Heintað frá "https://fo.wikipedia.org/w/index.php?title=Kopar&oldid=345304"










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