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

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe p-Block Elements1 Mark
MCQ
The element that oxidizes water to $\mathrm {O_2}$ with a large evolution of heat is:
  • ✓
    $ \mathrm{F}_2 $
  • B
    $ \mathrm{Cl}_2 $
  • C
    $ \mathrm{Br}_2 $
  • D
    $ \mathrm{I}_2 $
✓

Answer

Correct option: A.
$ \mathrm{F}_2 $
$ \mathrm{F}_2 $ is the most powerful oxidizing agent and evolves large amount of heat due to the formation of $H -$ bond with $ \mathrm{H_2O} ($It is also the most electronegative element$)$

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