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

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 3. Classification of elements and periodicity in properties4 Marks
MCQ
The correct order of acid strength is
  • A
    $SO_3 < P_2O_3 < SiO_2 < Al_2O_3$
  • ✓
    $Al_2O_3 < SiO_2 < P_2O_5 < SO_3$
  • C
    $Al_2O_3 < SiO_2 < SO_2 < P_2O_3$
  • D
    $SiO_2 < SO_2 < Al_2O_3 < P_2O_5$
✓

Answer

Correct option: B.
$Al_2O_3 < SiO_2 < P_2O_5 < SO_3$
b
Metallic character decreases as you move across a period in the periodic table from left to right. This occurs as atoms more readily accept electrons to fill a valence shell than lose them to remove the unfilled shell. Metallic character increases as you move down an element group in the periodic table

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