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

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry3. Classification of elements and periodicity in properties1 Mark
MCQ
Which of the following is different from other three oxides?
  • A
    $MgO$
  • B
    $SnO$
  • ✓
    $ZnO$
  • D
    $PbO$
✓

Answer

Correct option: C.
$ZnO$
c
In $II'A'$ group density decreases down the group till $Ca$ and after that it increases.Correct order of density is $Sr > Be > Mg > Ca$

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