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Knowing the electron gain enthalpy value...

Knowing the electron gain enthalpy values for `O to O^(-)` and `O to O^(2-)` as `-141` and `"702 kJ mol"^(-1)` respectively, how can you account for the formation of a large number of oxides having `O^(2-)` species and not `O^(-)` ?

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NCERT TELUGU-THE P-BLOCK ELEMENTS -EXERCISES
  1. Justify the placement of O, S, Se, Te and Po in the same group of the ...

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  2. Why is dioxygen a gas but sulphur a solid ?

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  3. Knowing the electron gain enthalpy values for O to O^(-) and O to O^(2...

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  4. Which aerosols deplete ozone?

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  5. Describe the manufacture of H(2)SO(4) by contact process.

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  6. How is SO(2) an air pollutant?

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  7. Why are halogens strong oxidising agents?

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  8. Explain why fluorine forms only one oxoacid, HOF.

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  9. Explain why inspite of nearly the same electronegativity, oxygen forms...

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  10. Write two uses of ClO(2).

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  11. Why are halogens coloured ?

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  12. Write the reactions of F(2) and Cl(2) with water.

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  13. How can you prepare Cl(2) from HCl and HCl from Cl(2) ? Write the reac...

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  14. What inspired Bartlett for carrying out reaction between Xe and PtF(6)...

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  15. What are the oxidation states of phosphorus in the following H3PO3 ...

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  16. Write balanced equations for the folliowing. NaCl is heated with "C...

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  17. How are Xenon fluorides XeF(2),XeF(4) and XeF(6) obtained ?

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  18. With which neutral molecule, ClO^(-) is isoelectronic ? Is that molecu...

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  19. How are XeO(3) and XeOF(4) prepared ?

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  20. Arrange the following in the order of the property indicated for each ...

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