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3. Classification of elements and periodicity in properties — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Choose the $CORRECT$ reason for fluorine being a stronger oxidising agent than chlorine 

$(I)$ Low enthalpy of dissociation of $F-F$ bond

$(II)$ High hydration enthalpy of $F^-$

$(III)$ Low atomisation enthalpy of $F_2$

  • A
    Only $I$
  • ✓
    Only $II$
  • C
    $I$ and $III$ only
  • D
    Both $I$ and $II$
✓

Answer

Correct option: B.
Only $II$
b
The acidity of hydrides of $VI$ group elements increase from top to bottom as the bond strength $X-H$ decrease from top to bottom $H_2O < H_2S < H_2Se < H_2Te$

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