Copper forms which ion?

Copper forms which ion?

• A. Cu 2+
• B. Cu 1+
• C. Cu 3+
• D. Cu 0

Answer: (A)

Copper tends to lose electrons to form positively charged ions. The common oxidation state in many reactions, solutions, and compounds is +2, giving the Cu2+ ion. This happens when two electrons are removed from a neutral copper atom, resulting in a relatively stable configuration for many environments. Removing a third electron to make Cu3+ is highly unlikely under normal conditions, so Cu3+ is not common. The neutral metal (Cu0) exists as solid copper, not as an ion, and while Cu+ can occur in some compounds, Cu2+ is the dominant form in most typical contexts.

Copper tends to lose electrons to form positively charged ions. The common oxidation state in many reactions, solutions, and compounds is +2, giving the Cu2+ ion. This happens when two electrons are removed from a neutral copper atom, resulting in a relatively stable configuration for many environments. Removing a third electron to make Cu3+ is highly unlikely under normal conditions, so Cu3+ is not common. The neutral metal (Cu0) exists as solid copper, not as an ion, and while Cu+ can occur in some compounds, Cu2+ is the dominant form in most typical contexts.