Which of the following statements is not correct?

Options

A. Copper liberates hydrogen from acids.
B. In 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

Positive `E^@` value of copper accounts for its inability ot liberate `H_2` from acids.