MCQ
Sequence of acidic character is
  • A
    $SO_2 > CO_2 > CO > N_2O_5$
  • B
    $SO_2 > N_2O_5 > CO > CO_2$
  • $N_2O_5 > SO_2 > CO > CO_2$
  • D
    $N_2O_5 > SO_2 > CO_2 > CO$

Answer

Correct option: C.
$N_2O_5 > SO_2 > CO > CO_2$
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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