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Oxidation numbers of sodium, mercury in ...

Oxidation numbers of sodium, mercury in sodium amalgam are 

A

zero, zero

B

` +1.- 1 `

C

`-2, +2`

D

` 0, +1`

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Verified by Experts

The correct Answer is:
A
Na - Hg it is an alloy.
Hg is a major compoud
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Oxidation number is the charge which an atom of an element has in its ion or appears to have when present in the combined state. It is also called oxidation state. Oxidation number of any atom in the elementary state is zero. Oxidation number of a monoatomic ion is equal to the charge on it. In compounds of metals with non metals, metals have positive oxidation number while non metals have negative oxidation numbers. In compounds of two difference elements, the more electronegative element has negative oxidation number whereas the other has positive oxidation number. In complex ions, the sum of the oxidation number of all the atoms is equal to the charge on the ion. If a compound contains two or more atoms of the same element, they may have same or different oxidation states according as their chemical bonding is same or different. Oxidation number of sodium in sodium amalgam is

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Sodium crystallizes in a bcc lattice, hence the coordination number of sodium in sodium metal is

The number of s’ electrons in sodium atom is

Mention the preparation and ussers of sodium nitrate and sodium nitrate.

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AAKASH SERIES-REDOX REACTIONS-ADDITIONAL PRACTICE EXERCISE (LEVEL - I (MAIN)) (Straight Objective Type Questions)
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  2. In the reaction of chlorine with dry slaked lime, the oxidation number...

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  3. Oxidation numbers of sodium, mercury in sodium amalgam are

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  4. Chlorine is passed into dilute cold KOH solution. What are the oxidati...

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  5. What is the oxidation number of sulphur in Na(2)S(4)O(6)?

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  6. The oxidation number of nitrogen in NCI(3) is

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  7. What are the oxidation numbers of 'N' in NH(4)NO(3)?

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  8. Iron has the lowest oxidation state in

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  9. The oxidation number of phosphorus in sodium hypophosphite is

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  10. PbS+4H(2)O(2)rarrPbSO(4)+4H(2)O. In this reaction PbS undergoes

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  11. MnO(2)+4HClrarrMnCl(2)+Cl(2)+2H(2)O, In the reaction MnO(2) acts as

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  12. In the reaction P(4)+3OH^(-)+3H(2)Orarr 3H(2)PO(2)^(-)+PH(3) phosp...

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  13. Among the following ion the one that cannot undergo disproportionation

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  14. The reaction is Decomposition but it's not redox reaction

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  15. Which of the following is redox reaction

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  16. Which of the following is metal displacement reaction

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  17. Which of the following is a redox reaction?

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  18. Which of the following is not an example of disproportionation reactio...

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  19. In the reaction 3Mg+N(2)rarrMg(3)N(2)

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  20. Which one of the halogn is prepared by only electrolysis method

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