Which of the following statements is not correct -

Options

A. copper liberates hydrogen from acids.
B. in its higher oxidation states, manganese forms stable compounds with oxygen and fluorine.
C. `Mn^(3+)` and `Co^(3+)` are oxidising agents in aqueous solution.
D. `Ti^(2+)` and `Cr^(2+)` are reducing agents in aqueous solution.

Answer

A

Explanation

Copper can not liberate hydrogen from acids because it is placed below hydrogen in the electrochemical series.