List of top Chemistry Questions on Oxidation Number And Oxidation State

Match List I with List II for the oxidation state of central atoms:

List I	List II
(A) Cr2O72−	(I) +3
(B) MnO4−	(II) +5
(C) VO3−	(III) +7
(D) FeF63−	(IV) +6

Choose the correct answer from the options given below:

Why does Fluorine exhibit only -1 oxidation state?

Match List I with List II

List-I		List-II
(A)	Oxidation state of Mn in MnO2 is	(I)	+2
(B)	Most stable oxidation state of Mn is	(II)	+3
(C)	Most stable oxidation state of Mn in \(MnO_{4}^{-}\) is	(III)	+4
(D)	Characteristic oxidation state of  lanthanoids is	(IV)	+7

Choose the correct answer from the options given below:

Oxidation state of Sulphur in dithionite and dithionate ions are respectively

What is the oxidation number of Cr in Na₂Cr₂O₇?

In which of the following, oxidation state of phosphorous is +3?

What is the oxidation number of \(Cr\) in \(Na_2Cr_2O_7\)?

In which of the following oxidation state of phosphorous is +3?

Increasing order of oxidation state of metal in
KMnO₄, MnCl₂, MnO₂, Mn(OH)₃

From amongst the following alcohols the one that would react fastest with conc. HCI and anhydrous ZnCl₂, is

CoCl₃.xNH₃ on reaction with excess AgNO₃(aq.) gives two moles of AgCl as precipitate.
Summation of oxidation state of Co in CoCl₃.xNH₃ and x is:

Statement-I : Stability of +1 oxidation state increases as Ga< In < Tl
Statement-II : Stability of +1 oxidation state increases down the group due to inert pair effect.

Consider the following statements:
Statement I: Stability of +1 oxidation state increases down the group in group-13.
Statement II: Atomic radius of Ga is greater than that of Al.

In which of the following compounds Mn has the highest oxidation state?

Which metal shows the highest and maximum number of oxidation states?