1)

Which element gives the maximum number of oxides?


A) V

B) Cr

C) Mn

D) Fe

Answer:

Option C

Explanation:

Among the transition metals, Mn forms the maximum no. of oxides.

MnO(basic)     Mn3O (amphoteric)      Mn2O3 ( amphoteric)       MnO2 (amphoteric)   Mn2O7(acidic)