Chemistry - Complete P-block Question with Solution | TestHub

Concept:

Structural chemistry of oxides, Acid-base trends.

solution:

(A) , (B), and (C) are standard facts.

(D) is incorrect; in ${\mathrm{SO}}_3$, the sulfur is in +6 state and there is more $\mathrm{d}\pi -\mathrm{p}\pi$ bonding, typically making ${\mathrm{SO}}_3$ bonds shorter than ${\mathrm{SO}}_2$ (approx $1.42\mathring{A}$ vs $1.43\mathring{A}$ ).