Question

Compare the following according to acidic nature of their oxides.
$CaO,CO,$ $C{O}_2,N_2{O}_5,S{O}_3$

• A. $CaO<CO<C{O}_2<S{O}_3<N_2{O}_5$
• B. $CO<C{O}_2<CaO<N_2{O}_5<S{O}_3$
• C. $CaO<CO<C{O}_2<N_2{O}_5<S{O}_3$
• D. None of these

Answer 1

The correct option is C $CaO<CO<C{O}_2<N_2{O}_5<S{O}_3$

Along a period acidic nature of oxide increases.

Down the group basic nature of oxide increases.

When the distance between the element and oxygen increases, basic character increases.

So, $CaO<CO<C{O}_2<N_2{O}_5<S{O}_3$