Arrange the following in the order of property indicated for each
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    The p-Block Elements

    Multiple Choice QuestionsShort Answer Type

    551. What is the oxidation state of phosphorus in the following: (a) H3PO3, (b) PCl3 (c) Ca3P2, (d) Na3PO4, (e) POF3?
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    552. Write balanced equations for the following:
    NaCl is heated with sulphuric acid in the presence of MnO2.
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    553. Write balanced equations for the following:
    Chlorine gas is passed into a solution of NaI in water.  
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    554. How are xenon fluorides XeF2, XeF4 and XeF6 obtained?
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    555. With what neutral molecule is CIO– isoelectronic? Is that molecule a Lewis base?
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    556. How are XeO3 and XeOF4 prepared?
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    557. Arrange the following in the order of property indicated for each set:
    F2, Cl2, Br2, I2 – increasing bond ethalpy.

    The bond dissocation energy decrease down the group. As size increase.In the order of increasing bond energy Cl—Cl bond energy is highest while I—I bond energy is least.

    I-I < F-F < Br-Br < Cl-Cl
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    558. Arrange the following in the order of property indicated for each set:
    HF, HCl, HBr, HI - increasing acid strength
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    559. Arrange the following in the order of property indicated for each set:
    NH3 PH3 AsH3 SbH3 BiH3 – increasing base strength.
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    560. 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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