Question

$Si{O}_2$, $Ge{O}_2$, $SnO$ and $PbO$ are respectively:

• A. acidic, amphoteric, acidic, basic
• B. acidic, amphoteric, amphoteric, acidic
• C. acidic, basic, amphoteric, basic
• D. acidic, amphoteric, amphoteric, basic

Answer 1

The correct option is D acidic, amphoteric, amphoteric, basic

As we move down in a group, acidic nature of oxides decreases and basic nature increases. $Si,Ge,Sn$ and $Pb$ belongs to group 14, among them $Si$ is the first element and $Pb$ is last, hence, oxides of $Si$ are acidic and oxides of $Pb$ are basic while $Ge$ and $Sn$ are amphoteric as they came in middle of group.

So, the correct order is option $D$.