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Why helium and neon not form any compoun...

Why helium and neon not form any compounds?

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He and neon do not form any compounds because (i) they have no tendency to lose electrons due to their high ionisation enthalpies. (ii) they do not have vacant d-orbitals for excitation of electrons.
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ICSE-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. Which noble gas is radioactive?

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  2. Xe readily forms compounds but Kr does not form compounds easily. Why?

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  3. Why helium and neon not form any compounds?

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  4. How does xenon atom form compounds with fluorine even though the xenon...

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  5. Why do noble gases form compounds with fluorine and oxygen only.

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  6. What are clathrate compounds of noble gases?

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  7. Which one of the following does not exist ? (i) XeOF4 (ii) NeF2 (...

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

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  9. Which is the most abundant noble gas ?

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  10. Why do members of the noble gas family have low boiling points ?

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  11. Why is OF6 compound not known?

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  12. Why is NF6 compound not known?

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  13. Why are fluorine and oxygen compounds called oxygen fluorides?

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  14. Nitrogen does not form pentahalides. Give reason.

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  15. Noble gases are mostly chemically inert. Give reason.

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  16. Complete and balance the chemical equation: BrO(3)^(-)+ F2 + OH^(-) ...

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  17. Draw the structure of xenon oxyfluoride which is isoelectronic with IF...

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  18. Fluorine provides the largest variety of interhalogen compounds among ...

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  19. Draw and name the molecular shape of SF6.

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  20. Out of H(2)O which one has higher bond angle and why?

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