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Which one of the following does not exis...

Which one of the following does not exist ?
`(i) XeOF_(4) (ii) NeF_(2) (iii) XeF_(2) (iv) XeF_(6)`.

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The correct Answer is:
The sum of first and second ionization enthalpies of `Ne` are much higher than those of `Xe`.As a result, `F_(2)` can oxide `Xe` to `Xe^(2+)`.In other words, `NeF_(2)` does not exist. In contrast, all the xenon fluorides `(XeF_(6))` and xenon oxyfluoride `(XeOF_(4))` do exist.
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RESONANCE-P BLOCK ELEMENTS-B.L.E
  1. With which neutral molecule is ClO^(-) isoelectronic ? Is this molecul...

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  2. Why has it been difficult to study the chemistry of radon ?

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

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  4. List the uses of neon and argon gases.

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

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  6. Explain why inspite of nearly the same electronegativity, nitrogen for...

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  7. Write two uses of ClO2.

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  8. Why are halogens coloured?

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  9. How can you prepare Cl2 from HCl and HCI from Cl2? Write reactions onl...

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  10. How are xenon fluorides XeF(2),XeF(4) and XeF(6) obtained?

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  11. Which one of the following does not exist ? (i) XeOF(4) (ii) NeF(2) ...

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  12. Why do noble gases have comparatively large atomic sizes?

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  13. Considering the parameters such as bond dissociation enthalpy, electro...

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  14. Write the reaction of F(2) and Cl(2) with water.

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  15. Name two poisonous gases which can be prepared from chlorine gas.

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  16. Give the formula and describe the structure of a noble gas species whi...

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  18. Assign appropriate reasons for each of the following statements. (i)...

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  19. Complete and balance the following chemical equations. (i)BrO(3)^(-)...

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