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Oxidation reaction involves loss of electrons, and reduction reaction involves gain of electrons. The reaction in which a species disproportinates into two oxidation states ( lower and higher) is called disproportionation reaction. Which of the following statements is wrong?A. The algebraic sum of the oxidation numbers of all atoms in an iron is zero.B. The oxidation number is an arbitrary number. It can have positive, negative, zero, or fractional values.C. When a negative ion changes to neutral species, the process is oxidation.D. The oxidation number of phosphorous can very from `-3 t o +5`.

Answer» Correct Answer - A
a. Wrong: The algebraic sum of the oxidation numbers of all the atoms in an ion equals the charge present on the ion.
b. True statement
c. True `(2Cl^(ө)rarrCl_(2)+2e^(-))`(oxidation)
True


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