Question

Which of the following are oxidation states that copper exhibits?

• A. +1 and +3
• B. +1 and +2
• C. +1, +2 and +3
• D. +1, +2 and +4

Answer 1

The correct option is B +1 and +2

$CuCl$ and $CuC{l}_2$ are compounds, which show two oxidation states of copper (+1 and +2). As far as copper is concerned, these two are very common oxidation states apart from the elemental 0 state.