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Name the noble gas that is radioactive?...

Name the noble gas that is radioactive?

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Radon or Rn.
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OSWAAL PUBLICATION-P - BLOCK ELEMENTS-TOPIC - 4 (GROUP - 18 ELEMENTS, THEIR PROPERTIES AND SOME IMPORTANT COMPOUNDS)(VERY SHORT ANSWER TYPE QUESTIONS)
  1. Name the noble gas that is radioactive?

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  2. Which noble gas does not occur in nature?

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  3. Complete the reaction XeF(4)+ O(2)F(2)to A+ O(2). Identify A.

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  4. XeF(6)+3H(2)Orarr P+6HF What is P?

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  5. Name the main commercial source of helium.

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  6. Noble gases have very low boiling point. Why ?

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  7. Give reason for chemical inertness of noble gases.

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  8. Name the method used for isolation of noble gas mixture from air.

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  9. Why do boiling points of noble gases increase from helium to radon?

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  10. Why do not helium, neon and argon form chemical compounds.

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  11. What is the shape of XeF(6) molecule ?

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

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  13. Helium and neon do not form compounds with fluorine. Why ?

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  14. Why are the elements of Group - 18 known as noble gases?

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  15. Neon is generally used for warning signals. Why ?

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

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  17. What prompted Bartlett to the discovery of noble gas compounds.

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  18. Noble gases have very high ionisation enthalpy. Why ?

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  19. Ionisation enthalpy decreases down the group in noble gases. Why ?

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  20. How does atomic radii changes in group - 18 elements ?

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