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The p-Block Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe p-Block Elements1 Mark
MCQ
Which of the following statements are correct?
$A.$ Among halogens, radius ratio between iodine and fluorine is maximum.
$B.$ Leaving $F—F$ bond, all halogens have weaker $X—X$ bond than $X—X\ '$ bond in interhalogens.
$C.$ Among interhalogen compounds maximum number of atoms are present in iodine fluoride.
$D.$ Interhalogen compounds are more reactive than halogen compounds.
  • A
    $A ,B$ and $C$
  • B
    $A$ and $b$
  • C
    $A ,C$ and $D$
  • ✓
    $A ,B$ and $D$
✓

Answer

Correct option: D.
$A ,B$ and $D$
  1. Among group $17$ elements radius ratio of iodine and fluorine is maximum because size of iodine is largest and fluorine is smallest in the group.
  2. The correct statement is inter halogen compounds are more reactive than halogens $($except fluorine$).$ This is because $X-X\ ’$ bond in interhalogens is weaker than $X-X$ bond in halogens except $F-F.$
  3. As the ratio between radii of $X$ and $X\ ’$ increase, the number of atoms per molecule also increases. Thus, iodine $(\text{VII})$ fluoride should have maximum number of atoms as the ratio of radii between $I$ and $F$ will be maximum.
  4. Interhalogen compounds are more reactive than halogens $($except fluorine$).$ This is because $X-X\ ’$ bond in interhalogens is weaker than $X-X\ ’$ bond in halogens.

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