Why Does Copper Exhibit Two Valencies?

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Discussion Overview

The discussion centers on the question of why copper exhibits two valencies, specifically exploring the common oxidation states of copper in its compounds.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions the meaning of "two valencies" in relation to copper.
  • Another participant suggests that copper can exhibit +1 or +2 oxidation states, noting that based on valence electrons, +1 might seem more appropriate.
  • A different participant introduces the idea of higher oxidation states, mentioning Copper (III) and Copper (IV) as additional valencies.
  • It is noted that +1 and +2 are the most commonly referenced oxidation states in educational contexts.

Areas of Agreement / Disagreement

Participants express differing views on the number of oxidation states for copper, with some focusing on +1 and +2 as the primary states while others acknowledge higher states like +3 and +4. The discussion remains unresolved regarding the full range of copper's valencies.

Bipix
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why does copper show 2 valancies??
 
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What do you mean shows 2 valencies?

"In chemistry, valence, also known as valency or valence number, is a measure of the number of bonds formed by an atom of a given element."
 
Last edited:
I guess Bipix means copper in its compounds can be either +1 or +2. Judging from the valence electrons, it should be +1 only.
 
Well... There are Copper (III) and Copper (IV) as well...
 
Yes, but +1 and +2 are most common, on some levels on education they are the only ones mentioned.
 

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