The $S-O$ and $P-O$ bond order in $SO_4^{2-}$ and $PO_4^{3-}$ are respectively:

In the resonance hybrid of an ozone $(O_3)$ molecule, the $O-O$ bond length is: (in $pm$)

Which of the following orders of resonance energy is correct?

Which of the following statements is correct about $CO_3^{2-}$ ?
$A$. The hybridisation of the central atom is $sp^3$.
$B$. Its resonance structure has one $C-O$ single bond and two $C=O$ double bonds.
$C$. The average formal charge on each oxygen atom is $0.67$ units.
$D$. All $C-O$ bond lengths are equal.

Draw the resonating structures of $NO_2$ and $N_2O_5$.

Despite having an unpaired electron,the $ClO_2$ molecule does not undergo dimerization because .................