Why has it been difficult to study the chemistry of radon? from C
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    The p-Block Elements

    Multiple Choice QuestionsShort Answer Type

    401. Sea is the greatest source of some halogens. Comment.
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    402. Give the reason for bleaching action of Cl2.
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    403. Name two poisonous gases which can be prepared from chlorine gas.
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    404. Why is ICl more reactive than I2 ?
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    405. Why is helium used in dividing apparatus?
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    406. Balance the following equation: Xe F6 + H2O→
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    407. Why has it been difficult to study the chemistry of radon?

    Radon is radioactive with very short half-life which makes the study of chemistry of radon diffcult.
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    408. Though nitrogen exhibits + 5 oxidation state it does not form pentahalide. Give reasons.
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    409. PH3 has lowerboiling point than NH3. Why?
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    410. Write the reaction of thermal decomposition of sodium azide.
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