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

Options

A. In additon to the normal oxidation states, the zero oxidation state is also shown by these elements in complexes
B. In the highest oxidaiton 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 4s and 3d 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 change with the oxidation state, low oxidation states are more basic and high oxidation state are more acidic. For example, MnO and `Mn_(2)O_(3)` are basic while `Mn_(2)O_(7)` is acidic in nature.