Question

Concider the following statements,
(I) As the oxidation number of a metal increases, ionic character decreases.
A. I,II,III and IV
B. only II
C. II and III
D. II and IV

Answer 1

Correct Answer - A
As the oxidation number of a metal increases, ionic character decreases. In case of `Mn,Mn_(2)O_(7)` is a covalent green oil which possess perdominantly acidic character and it gives `HMnO_(4).V_(2)O_(5)` is amphoteric, it gives `VO_(4)^(3-)` as well as `VO_(2)^(+)` salts. CrO is basic while `Cr_(2)O_(3)` is amphoteric.