NEET Chemistry Redox Reactions Questions Solved

NEET - 2009

Oxidation numbers of P in PO43-, of S in SO42- and that of Cr in Cr2O72- are respectively,

(a) +5, +6 and +6                      (b) +3, +6 and +5

(c) +5, +3 and +6                      (d) -3, +6 and +6

Key Idea (i) Sum of oxidation states of all atoms = charge of ion.

(ii) Oxidation number of oxygen = -2

 Let the oxidation state of P in PO43- be x.

                        PO43-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Difficulty Level:

  • 76%
  • 9%
  • 12%
  • 5%
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