The isoelectronic pair is

For the ozone molecule,consider the following statements:
$(A)$ It is a linear molecule with a bond angle of $180^{\circ}$.
$(B)$ It is an angular molecule with a bond angle of $117^{\circ}$.
$(C)$ The bond lengths of both $O-O$ bonds are the same.
$(D)$ With respect to oxygen,it is thermodynamically more stable.
The correct options are:

$A$ lone pair of electrons in an atom implies

Which of the following bond angle orders is correct?

Which of the following structures is the most preferred and hence of lowest energy for $SO_3$?

The correct order of bond angle in the given species is: