Name the first compound of noble gases. Who isolated this compoun
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    The p-Block Elements

    Multiple Choice QuestionsShort Answer Type

    491. The brown colour of an acidified dilute solution of iodine in aqueous potassium iodide is intensified by the addition of a nitrite but is discharged by the addition of sulphite.
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    492. With what neutral molecule is CIO– iso– electronic? 
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    493. Why is OF6 compound not known?
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    494. Noble gases have very low boiling points. Why?
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    495. Name the first compound of noble gases. Who isolated this compound?

     Neil Bartlelt solated the first compound of noble gases was Xe+[Pt F6]– .
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    496. Give an equation in which the Xenon fluoride act as a 
    (i)    fluoride donor (ii) fluoride acceptor.
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    497. What happens when Xenon hexafluoride is being hydrolysed completely?
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    498. How will you prepare Xenon oxy-tetrafluoride?
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    499. Give the formula and describe the structure of a noble gas species which is isostructural with:
    (a) ICl4–,    (b) IBr2–,    (c) BrO3–   
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    500. Give two uses of argon.
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