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Oxidation is defined as:...

Oxidation is defined as:

A

Gain of electrons

B

Decrease in positive valency

C

Loss of electrons

D

Decrease in negative valency

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The correct Answer is:
C
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The oxidation number of an element in a compound decides its nature to acts as oxidant or reductant. Oxidation number is defined and the residual charge which an atom has or appears to have in a molecule whenal other atoms are removed from the molecule as ions. Oxidation number is frequently used interchangebly with oxidation state. The stock notations of oxidation number are based on the periodic property-electronegativity. An atom in a molecule can be assigned positive, negative or zero oxidation number by considering its environment. In few cases, oxidation number can evenn be fractional. Oxidation number of Y in YBa_(2)Cu_(2)O_(7) is +3, then oxidation number of Cu is:

The oxidation number of an element in a compound decides its nature to acts as oxidant or reductant. Oxidation number is defined and the residual charge which an atom has or appears to have in a molecule whenal other atoms are removed from the molecule as ions. Oxidation number is frequently used interchangebly with oxidation state. The stock notations of oxidation number are based on the periodic property-electronegativity. An atom in a molecule can be assigned positive, negative or zero oxidation number by considering its environment. In few cases, oxidation number can evenn be fractional. Oxidation number of oxygen in K_(2)O, K_(2)O_(2),KO_(2),KO_(3) are in the order:

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Oxidation involves

The oxidation state of an element in a particular compound can be defined as

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The oxidation state of a substance increases in oxidation and decreases in reduction.

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Knowledge Check

  • The oxidation state of an element in a particular compound can be defined as

    A
    The charge aquired by its atom on the basis of electronegative consideration from other atoms in the molecule.
    B
    The residual charge acquired by its atom after removing all electronagative atoms from the molecule.
    C
    The valency of the most electronegative atom present in the molecule
    D
    Total number of electrons accepted by an atom to form a molecule.
    • ALLEN-REDOX REACTIONS-Questions
    1. Oxidation is defined as:

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    2. Reduction is defined as -

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    3. In the reaction MnO(4)^(-)+SO(3)^(-2)+H^(+)rarrSO(4)^(-2)+Mn^(2+)+H(2)...

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    4. The charge on cobalt in [Co(CN)(6)]^(-3) is -

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    5. Which of the following halogen always show only one oxidation state -

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    6. Which of the following reactions does not involve oxidation-reduction ...

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    7. In which of the following compounds, the oxidation state of I-atom is ...

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    8. The oxidation number of phosphorus in Ba(H(2)PO(2))(2) is:

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    9. What is the oxidation state of Ni "in" (Ni(CO))4 ?

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    10. H(2)O(2)+H(2)O(2)rarr2H(2)O+O(2) is an example of dispropotionation be...

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    11. Positive oxidation state of an element indicates that it is -

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    12. Predict the highest and lowest oxidation state of (a) Ti and (b) Tl

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    13. Oxidation state of oxygen atom in potassium superoxide is

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    14. Molecular weight of KMnO(4) in acidic medium and neutral medium will b...

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    15. Equivalent weight of H(3)PO(4) in each of the reaction will be respect...

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    16. In acidic medium, equivalent weight of K(2)Cr(2)O(7) (molecular weight...

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    17. The fast reaction between water and sodium is the example is -

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    18. Choose the redox reaction from the following -

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    19. Which of the following is not a redox reaction ?

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    20. In the reaction 6Li+N(2)rarr2Li(3)N

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