In context with the transition elements, which of the following statements is incorrect ?

Options

A. In addition to the normal oxidation states, the zero oxidation state is also shown by these elements in complexes
B. In the highest oxidation states, the transition metal show basic character and form cationic complexes
C. In the highest oxidation states of the first five transition elements (Sc to Mn), all the s 4 and d 3 electrons are used for bonding
D. Once the `d^5` configuration is exceeded, the tendency to involve all the 3d electrons in bonding decreases

Answer

B

Explanation

The basic character of any element changes with the oxidation state, low oxidation states are more basic and high oxidation state are more acidic. For example, MnO and `Mn_2O_3` are basic while `Mn_2O_7` is acidic in nature.