1.

Concider the following statements, (I) As the oxidation number of a metal increases, ionic character decreases.

Answer»

I,II,III and IV
only II
II and III
II and IV

Solution :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.


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